86580917 has 2 divisors, whose sum is σ = 86580918. Its totient is φ = 86580916.

The previous prime is 86580859. The next prime is 86580931. The reversal of 86580917 is 71908568.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67141636 + 19439281 = 8194^2 + 4409^2 .

It is a cyclic number.

It is not a de Polignac number, because 86580917 - 2¹⁸ = 86318773 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 (86580997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43290458 + 43290459.

It is an arithmetic number, because the mean of its divisors is an integer number (43290459).

Almost surely, 2^86580917 is an apocalyptic number.

It is an amenable number.

86580917 is a deficient number, since it is larger than the sum of its proper divisors (1).

86580917 is an equidigital number, since it uses as much as digits as its factorization.

86580917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 86580917 is about 9304.8867268764. The cubic root of 86580917 is about 442.3921313457.

The spelling of 86580917 in words is "eighty-six million, five hundred eighty thousand, nine hundred seventeen".