57611663 has 2 divisors, whose sum is σ = 57611664. Its totient is φ = 57611662.

The previous prime is 57611611. The next prime is 57611699. The reversal of 57611663 is 36611675.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57611663 - 2⁶ = 57611599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57611063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28805831 + 28805832.

It is an arithmetic number, because the mean of its divisors is an integer number (28805832).

Almost surely, 2^57611663 is an apocalyptic number.

57611663 is a deficient number, since it is larger than the sum of its proper divisors (1).

57611663 is an equidigital number, since it uses as much as digits as its factorization.

57611663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 35.

The square root of 57611663 is about 7590.2347131034. The cubic root of 57611663 is about 386.2218180616.

The spelling of 57611663 in words is "fifty-seven million, six hundred eleven thousand, six hundred sixty-three".