57998687 has 2 divisors, whose sum is σ = 57998688. Its totient is φ = 57998686.

The previous prime is 57998683. The next prime is 57998729. The reversal of 57998687 is 78689975.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57998687 - 2² = 57998683 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57998683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28999343 + 28999344.

It is an arithmetic number, because the mean of its divisors is an integer number (28999344).

Almost surely, 2^57998687 is an apocalyptic number.

57998687 is a deficient number, since it is larger than the sum of its proper divisors (1).

57998687 is an equidigital number, since it uses as much as digits as its factorization.

57998687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 59.

The square root of 57998687 is about 7615.6869027029. The cubic root of 57998687 is about 387.0847430861.

It can be divided in two parts, 57998 and 687, that added together give a palindrome (58685).

The spelling of 57998687 in words is "fifty-seven million, nine hundred ninety-eight thousand, six hundred eighty-seven".