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6490061 = 8577573
BaseRepresentation
bin11000110000011111001101
3110012201200122
4120300133031
53130140221
6351034325
7106110314
oct30603715
913181618
106490061
113733096
12220b9a5
131463096
14c0d27b
15882eab
hex6307cd

6490061 has 4 divisors (see below), whose sum is σ = 6498492. Its totient is φ = 6481632.

The previous prime is 6490037. The next prime is 6490063. The reversal of 6490061 is 1600946.

6490061 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1600946 = 2800473.

It can be written as a sum of positive squares in 2 ways, for example, as 6325225 + 164836 = 2515^2 + 406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-6490061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6490061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6490063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2930 + ... + 4643.

It is an arithmetic number, because the mean of its divisors is an integer number (1624623).

Almost surely, 26490061 is an apocalyptic number.

It is an amenable number.

6490061 is a deficient number, since it is larger than the sum of its proper divisors (8431).

6490061 is an equidigital number, since it uses as much as digits as its factorization.

6490061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8430.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 6490061 is about 2547.5598128405. The cubic root of 6490061 is about 186.5303877056.

The spelling of 6490061 in words is "six million, four hundred ninety thousand, sixty-one".

Divisors: 1 857 7573 6490061