2057605691 has 8 divisors (see below), whose sum is σ = 2147723424. Its totient is φ = 1967542720.

The previous prime is 2057605679. The next prime is 2057605699. The reversal of 2057605691 is 1965067502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2057605691 - 2¹⁴ = 2057589307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2057605699) 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, 75551 + ... + 99111.

It is an arithmetic number, because the mean of its divisors is an integer number (268465428).

Almost surely, 2^2057605691 is an apocalyptic number.

2057605691 is a deficient number, since it is larger than the sum of its proper divisors (90117733).

2057605691 is a wasteful number, since it uses less digits than its factorization.

2057605691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27381.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 2057605691 is about 45360.8387378364. The cubic root of 2057605691 is about 1271.9031731719.

The spelling of 2057605691 in words is "two billion, fifty-seven million, six hundred five thousand, six hundred ninety-one".