2621494864 has 40 divisors (see below), whose sum is σ = 5154098688. Its totient is φ = 1291537920.

The previous prime is 2621494829. The next prime is 2621494891. The reversal of 2621494864 is 4684941262.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322984 + ... + 331000.

Almost surely, 2^2621494864 is an apocalyptic number.

It is an amenable number.

2621494864 is a deficient number, since it is larger than the sum of its proper divisors (2532603824).

2621494864 is a wasteful number, since it uses less digits than its factorization.

2621494864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8323 (or 8317 counting only the distinct ones).

The product of its digits is 663552, while the sum is 46.

The square root of 2621494864 is about 51200.5357784467. The cubic root of 2621494864 is about 1378.8478207676.

The spelling of 2621494864 in words is "two billion, six hundred twenty-one million, four hundred ninety-four thousand, eight hundred sixty-four".