90631850 has 24 divisors (see below), whose sum is σ = 170614080. Its totient is φ = 35814320.

The previous prime is 90631841. The next prime is 90631859. The reversal of 90631850 is 5813609.

It is an interprime number because it is at equal distance from previous prime (90631841) and next prime (90631859).

It is a super-3 number, since 3×90631850³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90631859) 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, 6770 + ... + 15069.

It is an arithmetic number, because the mean of its divisors is an integer number (7108920).

Almost surely, 2^90631850 is an apocalyptic number.

90631850 is a deficient number, since it is larger than the sum of its proper divisors (79982230).

90631850 is a wasteful number, since it uses less digits than its factorization.

90631850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21934 (or 21929 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 90631850 is about 9520.0761551576. The cubic root of 90631850 is about 449.1867616567.

The spelling of 90631850 in words is "ninety million, six hundred thirty-one thousand, eight hundred fifty".