2687624664 has 16 divisors (see below), whose sum is σ = 6719061720. Its totient is φ = 895874880.

The previous prime is 2687624659. The next prime is 2687624671. The reversal of 2687624664 is 4664267862.

It is a super-2 number, since 2×2687624664² = 14446652669082225792, 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 in 3 ways as a sum of consecutive naturals, for example, 55992157 + ... + 55992204.

Almost surely, 2^2687624664 is an apocalyptic number.

2687624664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2687624664 is an abundant number, since it is smaller than the sum of its proper divisors (4031437056).

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

2687624664 is a wasteful number, since it uses less digits than its factorization.

2687624664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111984370 (or 111984366 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 51.

The square root of 2687624664 is about 51842.3057357599. The cubic root of 2687624664 is about 1390.3459387747.

The spelling of 2687624664 in words is "two billion, six hundred eighty-seven million, six hundred twenty-four thousand, six hundred sixty-four".