2057215664 has 40 divisors (see below), whose sum is σ = 4560779520. Its totient is φ = 880596288.

The previous prime is 2057215661. The next prime is 2057215669. The reversal of 2057215664 is 4665127502.

It is not an unprimeable number, because it can be changed into a prime (2057215661) 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, 85517 + ... + 106899.

It is an arithmetic number, because the mean of its divisors is an integer number (114019488).

Almost surely, 2^2057215664 is an apocalyptic number.

It is an amenable number.

2057215664 is an abundant number, since it is smaller than the sum of its proper divisors (2503563856).

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

2057215664 is a wasteful number, since it uses less digits than its factorization.

2057215664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22257 (or 22251 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 2057215664 is about 45356.5393741630. The cubic root of 2057215664 is about 1271.8228033957.

The spelling of 2057215664 in words is "two billion, fifty-seven million, two hundred fifteen thousand, six hundred sixty-four".