75090636 has 36 divisors (see below), whose sum is σ = 191100000. Its totient is φ = 24860448.

The previous prime is 75090629. The next prime is 75090637. The reversal of 75090636 is 63609057.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×75090636² = 11277207229768992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 75090636.

It is not an unprimeable number, because it can be changed into a prime (75090637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1636 + ... + 12363.

Almost surely, 2^75090636 is an apocalyptic number.

It is an amenable number.

75090636 is an abundant number, since it is smaller than the sum of its proper divisors (116009364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75090636 is a wasteful number, since it uses less digits than its factorization.

75090636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14158 (or 14153 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 75090636 is about 8665.4853297435. The cubic root of 75090636 is about 421.8861428497.

The spelling of 75090636 in words is "seventy-five million, ninety thousand, six hundred thirty-six".