90864365 has 16 divisors (see below), whose sum is σ = 115029120. Its totient is φ = 68713920.

The previous prime is 90864359. The next prime is 90864373. The reversal of 90864365 is 56346809.

It is not a de Polignac number, because 90864365 - 2⁴ = 90864349 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 62072 + ... + 63518.

It is an arithmetic number, because the mean of its divisors is an integer number (7189320).

Almost surely, 2^90864365 is an apocalyptic number.

90864365 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

90864365 is a deficient number, since it is larger than the sum of its proper divisors (24164755).

90864365 is a wasteful number, since it uses less digits than its factorization.

90864365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 90864365 is about 9532.2801574440. The cubic root of 90864365 is about 449.5705615073.

The spelling of 90864365 in words is "ninety million, eight hundred sixty-four thousand, three hundred sixty-five".