57999861 has 16 divisors (see below), whose sum is σ = 87549120. Its totient is φ = 37936080.

The previous prime is 57999841. The next prime is 57999863. The reversal of 57999861 is 16899975.

57999861 is a `hidden beast` number, since 579 + 9 + 9 + 8 + 61 = 666.

It is not a de Polignac number, because 57999861 - 2²⁵ = 24445429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57999798 and 57999807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57999863) 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, 18835 + ... + 21696.

It is an arithmetic number, because the mean of its divisors is an integer number (5471820).

Almost surely, 2^57999861 is an apocalyptic number.

It is an amenable number.

57999861 is a deficient number, since it is larger than the sum of its proper divisors (29549259).

57999861 is a wasteful number, since it uses less digits than its factorization.

57999861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40593 (or 40587 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The square root of 57999861 is about 7615.7639800614. The cubic root of 57999861 is about 387.0873548373.

The spelling of 57999861 in words is "fifty-seven million, nine hundred ninety-nine thousand, eight hundred sixty-one".