86700557 has 2 divisors, whose sum is σ = 86700558. Its totient is φ = 86700556.

The previous prime is 86700541. The next prime is 86700589. The reversal of 86700557 is 75500768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71808676 + 14891881 = 8474^2 + 3859^2 .

It is a cyclic number.

It is not a de Polignac number, because 86700557 - 2⁴ = 86700541 is a prime.

It is a super-2 number, since 2×86700557² = 15033973168220498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86700557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86700157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43350278 + 43350279.

It is an arithmetic number, because the mean of its divisors is an integer number (43350279).

Almost surely, 2^86700557 is an apocalyptic number.

It is an amenable number.

86700557 is a deficient number, since it is larger than the sum of its proper divisors (1).

86700557 is an equidigital number, since it uses as much as digits as its factorization.

86700557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 86700557 is about 9311.3133874873. The cubic root of 86700557 is about 442.5958076140.

The spelling of 86700557 in words is "eighty-six million, seven hundred thousand, five hundred fifty-seven".