90696631 has 2 divisors, whose sum is σ = 90696632. Its totient is φ = 90696630.

The previous prime is 90696577. The next prime is 90696701. The reversal of 90696631 is 13669609.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (13669609) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90696631 - 2¹³ = 90688439 is a prime.

It is a super-2 number, since 2×90696631² = 16451757749500322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90696031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45348315 + 45348316.

It is an arithmetic number, because the mean of its divisors is an integer number (45348316).

Almost surely, 2^90696631 is an apocalyptic number.

90696631 is a deficient number, since it is larger than the sum of its proper divisors (1).

90696631 is an equidigital number, since it uses as much as digits as its factorization.

90696631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 90696631 is about 9523.4778836305. The cubic root of 90696631 is about 449.2937580285.

The spelling of 90696631 in words is "ninety million, six hundred ninety-six thousand, six hundred thirty-one".