90900064 has 12 divisors (see below), whose sum is σ = 178959564. Its totient is φ = 45450016.

The previous prime is 90900041. The next prime is 90900109. The reversal of 90900064 is 46000909.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1420282 + ... + 1420345.

It is an arithmetic number, because the mean of its divisors is an integer number (14913297).

Almost surely, 2^90900064 is an apocalyptic number.

It is an amenable number.

90900064 is a deficient number, since it is larger than the sum of its proper divisors (88059500).

90900064 is a wasteful number, since it uses less digits than its factorization.

90900064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2840637 (or 2840629 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 90900064 is about 9534.1525055980. The cubic root of 90900064 is about 449.6294299028.

The spelling of 90900064 in words is "ninety million, nine hundred thousand, sixty-four".