2057070666 has 24 divisors (see below), whose sum is σ = 4785838560. Its totient is φ = 587734392.

The previous prime is 2057070661. The next prime is 2057070671. The reversal of 2057070666 is 6660707502.

It is an interprime number because it is at equal distance from previous prime (2057070661) and next prime (2057070671).

It is not an unprimeable number, because it can be changed into a prime (2057070661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3498126 + ... + 3498713.

It is an arithmetic number, because the mean of its divisors is an integer number (199409940).

Almost surely, 2^2057070666 is an apocalyptic number.

2057070666 is an abundant number, since it is smaller than the sum of its proper divisors (2728767894).

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

2057070666 is a wasteful number, since it uses less digits than its factorization.

2057070666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6996858 (or 6996851 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 2057070666 is about 45354.9409215799. The cubic root of 2057070666 is about 1271.7929222156.

The spelling of 2057070666 in words is "two billion, fifty-seven million, seventy thousand, six hundred sixty-six".