90632638 has 16 divisors (see below), whose sum is σ = 140154624. Its totient is φ = 43932760.

The previous prime is 90632621. The next prime is 90632651. The reversal of 90632638 is 83623609.

It is a happy number.

It is a super-3 number, since 3×90632638³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90632597 and 90632606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5553 + ... + 14563.

It is an arithmetic number, because the mean of its divisors is an integer number (8759664).

Almost surely, 2^90632638 is an apocalyptic number.

90632638 is a deficient number, since it is larger than the sum of its proper divisors (49521986).

90632638 is a wasteful number, since it uses less digits than its factorization.

90632638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9167.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 90632638 is about 9520.1175412912. The cubic root of 90632638 is about 449.1880634733.

The spelling of 90632638 in words is "ninety million, six hundred thirty-two thousand, six hundred thirty-eight".