90680808 has 32 divisors (see below), whose sum is σ = 231976800. Its totient is φ = 29523648.

The previous prime is 90680791. The next prime is 90680867. The reversal of 90680808 is 80808609.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42903 + ... + 44966.

It is an arithmetic number, because the mean of its divisors is an integer number (7249275).

Almost surely, 2^90680808 is an apocalyptic number.

It is an amenable number.

90680808 is an abundant number, since it is smaller than the sum of its proper divisors (141295992).

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

90680808 is a wasteful number, since it uses less digits than its factorization.

90680808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87921 (or 87917 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 90680808 is about 9522.6471109666. The cubic root of 90680808 is about 449.2676284707.

The spelling of 90680808 in words is "ninety million, six hundred eighty thousand, eight hundred eight".