90806680 has 32 divisors (see below), whose sum is σ = 205093440. Its totient is φ = 36184320.

The previous prime is 90806663. The next prime is 90806689. The reversal of 90806680 is 8660809.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90806689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6652 + ... + 15028.

It is an arithmetic number, because the mean of its divisors is an integer number (6409170).

Almost surely, 2^90806680 is an apocalyptic number.

It is an amenable number.

90806680 is an abundant number, since it is smaller than the sum of its proper divisors (114286760).

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

90806680 is a wasteful number, since it uses less digits than its factorization.

90806680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8659 (or 8655 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 90806680 is about 9529.2539057368. The cubic root of 90806680 is about 449.4754051435.

The spelling of 90806680 in words is "ninety million, eight hundred six thousand, six hundred eighty".