2664980681 has 16 divisors (see below), whose sum is σ = 2927793600. Its totient is φ = 2405652480.

The previous prime is 2664980671. The next prime is 2664980687. The reversal of 2664980681 is 1860894662.

It is a happy number.

It is not a de Polignac number, because 2664980681 - 2²² = 2660786377 is a prime.

It is a super-2 number, since 2×2664980681² = 14204244060206447522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2664980687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1119965 + ... + 1122341.

It is an arithmetic number, because the mean of its divisors is an integer number (182987100).

Almost surely, 2^2664980681 is an apocalyptic number.

It is an amenable number.

2664980681 is a deficient number, since it is larger than the sum of its proper divisors (262812919).

2664980681 is a wasteful number, since it uses less digits than its factorization.

2664980681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3064.

The product of its (nonzero) digits is 995328, while the sum is 50.

The square root of 2664980681 is about 51623.4508823267. The cubic root of 2664980681 is about 1386.4302377960.

The spelling of 2664980681 in words is "two billion, six hundred sixty-four million, nine hundred eighty thousand, six hundred eighty-one".