86915567 has 2 divisors, whose sum is σ = 86915568. Its totient is φ = 86915566.

The previous prime is 86915539. The next prime is 86915579. The reversal of 86915567 is 76551968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86915567 - 2⁶ = 86915503 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 (86915167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43457783 + 43457784.

It is an arithmetic number, because the mean of its divisors is an integer number (43457784).

Almost surely, 2^86915567 is an apocalyptic number.

86915567 is a deficient number, since it is larger than the sum of its proper divisors (1).

86915567 is an equidigital number, since it uses as much as digits as its factorization.

86915567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 47.

The square root of 86915567 is about 9322.8518705383. The cubic root of 86915567 is about 442.9613722313.

Subtracting from 86915567 its sum of digits (47), we obtain a triangular number (86915520 = T₁₃₁₈₄).

The spelling of 86915567 in words is "eighty-six million, nine hundred fifteen thousand, five hundred sixty-seven".