2656691712 has 60 divisors (see below), whose sum is σ = 7667405460. Its totient is φ = 885562368.

The previous prime is 2656691693. The next prime is 2656691717. The reversal of 2656691712 is 2171966562.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656691717) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 283662 + ... + 292877.

It is an arithmetic number, because the mean of its divisors is an integer number (127790091).

Almost surely, 2^2656691712 is an apocalyptic number.

It is an amenable number.

2656691712 is an abundant number, since it is smaller than the sum of its proper divisors (5010713748).

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

2656691712 is an equidigital number, since it uses as much as digits as its factorization.

2656691712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576563 (or 576544 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 2656691712 is about 51543.1053779262. The cubic root of 2656691712 is about 1384.9913264759.

The spelling of 2656691712 in words is "two billion, six hundred fifty-six million, six hundred ninety-one thousand, seven hundred twelve".