6246640264 has 16 divisors (see below), whose sum is σ = 11715526620. Its totient is φ = 3122499840.

The previous prime is 6246640237. The next prime is 6246640271. The reversal of 6246640264 is 4620466426.

It can be written as a sum of positive squares in 2 ways, for example, as 5937935364 + 308704900 = 77058^2 + 17570^2 .

It is an unprimeable number.

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, 69549 + ... + 131644.

Almost surely, 2^6246640264 is an apocalyptic number.

It is an amenable number.

6246640264 is a deficient number, since it is larger than the sum of its proper divisors (5468886356).

6246640264 is a wasteful number, since it uses less digits than its factorization.

6246640264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205080 (or 205076 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 40.

The square root of 6246640264 is about 79035.6898116288. The cubic root of 6246640264 is about 1841.6856268731.

The spelling of 6246640264 in words is "six billion, two hundred forty-six million, six hundred forty thousand, two hundred sixty-four".