57670661 has 2 divisors, whose sum is σ = 57670662. Its totient is φ = 57670660.

The previous prime is 57670631. The next prime is 57670663. The reversal of 57670661 is 16607675.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33709636 + 23961025 = 5806^2 + 4895^2 .

It is a cyclic number.

It is not a de Polignac number, because 57670661 - 2¹⁰ = 57669637 is a prime.

Together with 57670663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57670663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28835330 + 28835331.

It is an arithmetic number, because the mean of its divisors is an integer number (28835331).

Almost surely, 2^57670661 is an apocalyptic number.

It is an amenable number.

57670661 is a deficient number, since it is larger than the sum of its proper divisors (1).

57670661 is an equidigital number, since it uses as much as digits as its factorization.

57670661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 57670661 is about 7594.1201597025. The cubic root of 57670661 is about 386.3536116363.

The spelling of 57670661 in words is "fifty-seven million, six hundred seventy thousand, six hundred sixty-one".