86259977 has 2 divisors, whose sum is σ = 86259978. Its totient is φ = 86259976.

The previous prime is 86259967. The next prime is 86259997. The reversal of 86259977 is 77995268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85581001 + 678976 = 9251^2 + 824^2 .

It is a cyclic number.

It is not a de Polignac number, because 86259977 - 2¹⁸ = 85997833 is a prime.

It is not a weakly prime, because it can be changed into another prime (86259907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43129988 + 43129989.

It is an arithmetic number, because the mean of its divisors is an integer number (43129989).

Almost surely, 2^86259977 is an apocalyptic number.

It is an amenable number.

86259977 is a deficient number, since it is larger than the sum of its proper divisors (1).

86259977 is an equidigital number, since it uses as much as digits as its factorization.

86259977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 53.

The square root of 86259977 is about 9287.6249385944. The cubic root of 86259977 is about 441.8448316601.

The spelling of 86259977 in words is "eighty-six million, two hundred fifty-nine thousand, nine hundred seventy-seven".