6656756902 has 4 divisors (see below), whose sum is σ = 9985135356. Its totient is φ = 3328378450.

The previous prime is 6656756879. The next prime is 6656756903. The reversal of 6656756902 is 2096576566.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6656756902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6656756903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1664189224 + ... + 1664189227.

It is an arithmetic number, because the mean of its divisors is an integer number (2496283839).

Almost surely, 2^6656756902 is an apocalyptic number.

6656756902 is a deficient number, since it is larger than the sum of its proper divisors (3328378454).

6656756902 is a wasteful number, since it uses less digits than its factorization.

6656756902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3328378453.

The product of its (nonzero) digits is 4082400, while the sum is 52.

The square root of 6656756902 is about 81588.9508573312. The cubic root of 6656756902 is about 1881.1390507563.

The spelling of 6656756902 in words is "six billion, six hundred fifty-six million, seven hundred fifty-six thousand, nine hundred two".