6450490 has 8 divisors (see below), whose sum is σ = 11610900. Its totient is φ = 2580192.

The previous prime is 6450487. The next prime is 6450491. The reversal of 6450490 is 940546.

It can be written as a sum of positive squares in 2 ways, for example, as 6446521 + 3969 = 2539^2 + 63^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (6450491) 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, 322515 + ... + 322534.

Almost surely, 2^6450490 is an apocalyptic number.

6450490 is a deficient number, since it is larger than the sum of its proper divisors (5160410).

6450490 is a wasteful number, since it uses less digits than its factorization.

6450490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645056.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 6450490 is about 2539.7814866638. The cubic root of 6450490 is about 186.1505121566.

The spelling of 6450490 in words is "six million, four hundred fifty thousand, four hundred ninety".