6650261 has 4 divisors (see below), whose sum is σ = 6660000. Its totient is φ = 6640524.

The previous prime is 6650257. The next prime is 6650263. The reversal of 6650261 is 1620566.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6650261 - 2² = 6650257 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 6650261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6650263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3761 + ... + 5238.

It is an arithmetic number, because the mean of its divisors is an integer number (1665000).

Almost surely, 2^6650261 is an apocalyptic number.

It is an amenable number.

6650261 is a deficient number, since it is larger than the sum of its proper divisors (9739).

6650261 is an equidigital number, since it uses as much as digits as its factorization.

6650261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9738.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 6650261 is about 2578.8099968784. The cubic root of 6650261 is about 188.0526957307.

The spelling of 6650261 in words is "six million, six hundred fifty thousand, two hundred sixty-one".