90133645 has 8 divisors (see below), whose sum is σ = 123611904. Its totient is φ = 61805904.

The previous prime is 90133579. The next prime is 90133669. The reversal of 90133645 is 54633109.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90133645 is a prime.

It is a super-3 number, since 3×90133645³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1287589 + ... + 1287658.

It is an arithmetic number, because the mean of its divisors is an integer number (15451488).

Almost surely, 2^90133645 is an apocalyptic number.

It is an amenable number.

90133645 is a deficient number, since it is larger than the sum of its proper divisors (33478259).

90133645 is a wasteful number, since it uses less digits than its factorization.

90133645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575259.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 90133645 is about 9493.8740775302. The cubic root of 90133645 is about 448.3621861849.

The spelling of 90133645 in words is "ninety million, one hundred thirty-three thousand, six hundred forty-five".