2620704664 has 8 divisors (see below), whose sum is σ = 4913821260. Its totient is φ = 1310352328.

The previous prime is 2620704659. The next prime is 2620704673. The reversal of 2620704664 is 4664070262.

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

It is a super-2 number, since 2×2620704664² = 13736185871822705792, 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, 163794034 + ... + 163794049.

Almost surely, 2^2620704664 is an apocalyptic number.

It is an amenable number.

2620704664 is a deficient number, since it is larger than the sum of its proper divisors (2293116596).

2620704664 is a wasteful number, since it uses less digits than its factorization.

2620704664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327588089 (or 327588085 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 37.

The square root of 2620704664 is about 51192.8184807205. The cubic root of 2620704664 is about 1378.7092643206.

The spelling of 2620704664 in words is "two billion, six hundred twenty million, seven hundred four thousand, six hundred sixty-four".