90964645 has 4 divisors (see below), whose sum is σ = 109157580. Its totient is φ = 72771712.

The previous prime is 90964631. The next prime is 90964663. The reversal of 90964645 is 54646909.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71876484 + 19088161 = 8478^2 + 4369^2 .

It is a cyclic number.

It is not a de Polignac number, because 90964645 - 2¹⁵ = 90931877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9096460 + ... + 9096469.

It is an arithmetic number, because the mean of its divisors is an integer number (27289395).

Almost surely, 2^90964645 is an apocalyptic number.

It is an amenable number.

90964645 is a deficient number, since it is larger than the sum of its proper divisors (18192935).

90964645 is a wasteful number, since it uses less digits than its factorization.

90964645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18192934.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 90964645 is about 9537.5387286239. The cubic root of 90964645 is about 449.7358861690.

The spelling of 90964645 in words is "ninety million, nine hundred sixty-four thousand, six hundred forty-five".