90074881 has 8 divisors (see below), whose sum is σ = 97133120. Its totient is φ = 83035152.

The previous prime is 90074863. The next prime is 90074903. The reversal of 90074881 is 18847009.

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

It is a cyclic number.

It is not a de Polignac number, because 90074881 - 2⁷ = 90074753 is a prime.

It is a super-2 number, since 2×90074881² = 16226968374328322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90074881.

It is not an unprimeable number, because it can be changed into a prime (90074851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6490 + ... + 14908.

It is an arithmetic number, because the mean of its divisors is an integer number (12141640).

Almost surely, 2^90074881 is an apocalyptic number.

It is an amenable number.

90074881 is a deficient number, since it is larger than the sum of its proper divisors (7058239).

90074881 is a wasteful number, since it uses less digits than its factorization.

90074881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9255.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 90074881 is about 9490.7787351724. The cubic root of 90074881 is about 448.2647261540.

The spelling of 90074881 in words is "ninety million, seventy-four thousand, eight hundred eighty-one".