2669555864 has 8 divisors (see below), whose sum is σ = 5005417260. Its totient is φ = 1334777928.

The previous prime is 2669555851. The next prime is 2669555921. The reversal of 2669555864 is 4685559662.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2669555864² = 14253057022033572992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166847234 + ... + 166847249.

Almost surely, 2^2669555864 is an apocalyptic number.

It is an amenable number.

2669555864 is a deficient number, since it is larger than the sum of its proper divisors (2335861396).

2669555864 is a wasteful number, since it uses less digits than its factorization.

2669555864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333694489 (or 333694485 counting only the distinct ones).

The product of its digits is 15552000, while the sum is 56.

The square root of 2669555864 is about 51667.7449091791. The cubic root of 2669555864 is about 1387.2231823273.

The spelling of 2669555864 in words is "two billion, six hundred sixty-nine million, five hundred fifty-five thousand, eight hundred sixty-four".