57881663 has 8 divisors (see below), whose sum is σ = 66220032. Its totient is φ = 49560696.

The previous prime is 57881633. The next prime is 57881669. The reversal of 57881663 is 36618875.

It is a Cunningham number, because it is equal to 7608²-1.

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 57881663 - 2⁶ = 57881599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57881669) 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, 3806 + ... + 11412.

It is an arithmetic number, because the mean of its divisors is an integer number (8277504).

Almost surely, 2^57881663 is an apocalyptic number.

57881663 is a deficient number, since it is larger than the sum of its proper divisors (8338369).

57881663 is a wasteful number, since it uses less digits than its factorization.

57881663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8701.

The product of its digits is 241920, while the sum is 44.

The square root of 57881663 is about 7607.9999342797. Note that the first 4 decimals coincide. The cubic root of 57881663 is about 386.8242273883.

The spelling of 57881663 in words is "fifty-seven million, eight hundred eighty-one thousand, six hundred sixty-three".