90906968 has 16 divisors (see below), whose sum is σ = 171070080. Its totient is φ = 45288288.

The previous prime is 90906961. The next prime is 90906979. The reversal of 90906968 is 86960909.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90906961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18296 + ... + 22727.

It is an arithmetic number, because the mean of its divisors is an integer number (10691880).

Almost surely, 2^90906968 is an apocalyptic number.

It is an amenable number.

90906968 is a deficient number, since it is larger than the sum of its proper divisors (80163112).

90906968 is a wasteful number, since it uses less digits than its factorization.

90906968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41306 (or 41302 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 90906968 is about 9534.5145655141. The cubic root of 90906968 is about 449.6408129640.

The spelling of 90906968 in words is "ninety million, nine hundred six thousand, nine hundred sixty-eight".