6656877492 has 24 divisors (see below), whose sum is σ = 15571460352. Its totient is φ = 2213424000.

The previous prime is 6656877481. The next prime is 6656877497. The reversal of 6656877492 is 2947786566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6656877497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686884 + ... + 696507.

It is an arithmetic number, because the mean of its divisors is an integer number (648810848).

Almost surely, 2^6656877492 is an apocalyptic number.

It is an amenable number.

6656877492 is an abundant number, since it is smaller than the sum of its proper divisors (8914582860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6656877492 is a wasteful number, since it uses less digits than its factorization.

6656877492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383799 (or 1383797 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 60.

The square root of 6656877492 is about 81589.6898633645. The cubic root of 6656877492 is about 1881.1504099007.

The spelling of 6656877492 in words is "six billion, six hundred fifty-six million, eight hundred seventy-seven thousand, four hundred ninety-two".