2720664576 has 264 divisors, whose sum is σ = 9066474144. Its totient is φ = 769720320.

The previous prime is 2720664539. The next prime is 2720664623. The reversal of 2720664576 is 6754660272.

2720664576 is a `hidden beast` number, since 2 + 72 + 0 + 6 + 6 + 4 + 576 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11676556 + ... + 11676788.

Almost surely, 2^2720664576 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2720664576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4533237072).

2720664576 is an abundant number, since it is smaller than the sum of its proper divisors (6345809568).

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

2720664576 is a wasteful number, since it uses less digits than its factorization.

2720664576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The square root of 2720664576 is about 52159.9901840482. The cubic root of 2720664576 is about 1396.0200871213.

The spelling of 2720664576 in words is "two billion, seven hundred twenty million, six hundred sixty-four thousand, five hundred seventy-six".