2057610666 has 32 divisors (see below), whose sum is σ = 4230128448. Its totient is φ = 666834560.

The previous prime is 2057610661. The next prime is 2057610671. The reversal of 2057610666 is 6660167502.

It is an interprime number because it is at equal distance from previous prime (2057610661) and next prime (2057610671).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2057610661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57805 + ... + 86351.

It is an arithmetic number, because the mean of its divisors is an integer number (132191514).

Almost surely, 2^2057610666 is an apocalyptic number.

2057610666 is an abundant number, since it is smaller than the sum of its proper divisors (2172517782).

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

2057610666 is a wasteful number, since it uses less digits than its factorization.

2057610666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28886.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 2057610666 is about 45360.8935758545. The cubic root of 2057610666 is about 1271.9041982652.

The spelling of 2057610666 in words is "two billion, fifty-seven million, six hundred ten thousand, six hundred sixty-six".