2616404664 has 32 divisors (see below), whose sum is σ = 6557850000. Its totient is φ = 869889792.

The previous prime is 2616404663. The next prime is 2616404683. The reversal of 2616404664 is 4664046162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2616404663) 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, 130789 + ... + 149460.

Almost surely, 2^2616404664 is an apocalyptic number.

2616404664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2616404664 is an abundant number, since it is smaller than the sum of its proper divisors (3941445336).

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

2616404664 is a wasteful number, since it uses less digits than its factorization.

2616404664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280647 (or 280643 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 39.

The square root of 2616404664 is about 51150.8031608498. The cubic root of 2616404664 is about 1377.9547986350.

The spelling of 2616404664 in words is "two billion, six hundred sixteen million, four hundred four thousand, six hundred sixty-four".