2666762680 has 32 divisors (see below), whose sum is σ = 6039966240. Its totient is φ = 1059638400.

The previous prime is 2666762629. The next prime is 2666762687. The reversal of 2666762680 is 862676662.

It is a happy number.

It is a super-2 number, since 2×2666762680² = 14223246382881564800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666762687) 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, 214719 + ... + 226798.

It is an arithmetic number, because the mean of its divisors is an integer number (188748945).

Almost surely, 2^2666762680 is an apocalyptic number.

2666762680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2666762680 is an abundant number, since it is smaller than the sum of its proper divisors (3373203560).

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

2666762680 is a wasteful number, since it uses less digits than its factorization.

2666762680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441679 (or 441675 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 49.

The square root of 2666762680 is about 51640.7075861669. The cubic root of 2666762680 is about 1386.7391914833.

The spelling of 2666762680 in words is "two billion, six hundred sixty-six million, seven hundred sixty-two thousand, six hundred eighty".