90867645 has 24 divisors (see below), whose sum is σ = 171823392. Its totient is φ = 44056800.

The previous prime is 90867619. The next prime is 90867659. The reversal of 90867645 is 54676809.

It is not a de Polignac number, because 90867645 - 2⁸ = 90867389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90867645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91291 + ... + 92280.

It is an arithmetic number, because the mean of its divisors is an integer number (7159308).

Almost surely, 2^90867645 is an apocalyptic number.

It is an amenable number.

90867645 is a deficient number, since it is larger than the sum of its proper divisors (80955747).

90867645 is a wasteful number, since it uses less digits than its factorization.

90867645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183593 (or 183590 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 90867645 is about 9532.4522028699. The cubic root of 90867645 is about 449.5759709389.

The spelling of 90867645 in words is "ninety million, eight hundred sixty-seven thousand, six hundred forty-five".