86997511 has 2 divisors, whose sum is σ = 86997512. Its totient is φ = 86997510.

The previous prime is 86997503. The next prime is 86997541. The reversal of 86997511 is 11579968.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86997511 - 2³ = 86997503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86997541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43498755 + 43498756.

It is an arithmetic number, because the mean of its divisors is an integer number (43498756).

Almost surely, 2^86997511 is an apocalyptic number.

86997511 is a deficient number, since it is larger than the sum of its proper divisors (1).

86997511 is an equidigital number, since it uses as much as digits as its factorization.

86997511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 46.

The square root of 86997511 is about 9327.2456277295. The cubic root of 86997511 is about 443.1005365055.

The spelling of 86997511 in words is "eighty-six million, nine hundred ninety-seven thousand, five hundred eleven".