90633678 has 16 divisors (see below), whose sum is σ = 184239696. Its totient is φ = 29715840.

The previous prime is 90633643. The next prime is 90633679. The reversal of 90633678 is 87633609.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90633679) by changing a digit.

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, 123451 + ... + 124182.

It is an arithmetic number, because the mean of its divisors is an integer number (11514981).

Almost surely, 2^90633678 is an apocalyptic number.

90633678 is an abundant number, since it is smaller than the sum of its proper divisors (93606018).

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

90633678 is a wasteful number, since it uses less digits than its factorization.

90633678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247699.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 90633678 is about 9520.1721623088. The cubic root of 90633678 is about 449.1897815953.

The spelling of 90633678 in words is "ninety million, six hundred thirty-three thousand, six hundred seventy-eight".