90232645 has 8 divisors (see below), whose sum is σ = 108380160. Its totient is φ = 72118800.

The previous prime is 90232643. The next prime is 90232687. The reversal of 90232645 is 54623209.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90232645 - 2¹ = 90232643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90232643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2085 + ... + 13594.

It is an arithmetic number, because the mean of its divisors is an integer number (13547520).

Almost surely, 2^90232645 is an apocalyptic number.

It is an amenable number.

90232645 is a deficient number, since it is larger than the sum of its proper divisors (18147515).

90232645 is a wasteful number, since it uses less digits than its factorization.

90232645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16835.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 90232645 is about 9499.0865350306. The cubic root of 90232645 is about 448.5262818265.

The spelling of 90232645 in words is "ninety million, two hundred thirty-two thousand, six hundred forty-five".