2657991076 has 24 divisors (see below), whose sum is σ = 5010744704. Its totient is φ = 1226409120.

The previous prime is 2657991031. The next prime is 2657991079. The reversal of 2657991076 is 6701997562.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (2657991079) 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, 278341 + ... + 287731.

Almost surely, 2^2657991076 is an apocalyptic number.

2657991076 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2657991076 is a deficient number, since it is larger than the sum of its proper divisors (2352753628).

2657991076 is a wasteful number, since it uses less digits than its factorization.

2657991076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14851 (or 14849 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 52.

The square root of 2657991076 is about 51555.7084715165. The cubic root of 2657991076 is about 1385.2170852709.

The spelling of 2657991076 in words is "two billion, six hundred fifty-seven million, nine hundred ninety-one thousand, seventy-six".