90820516 has 6 divisors (see below), whose sum is σ = 158935910. Its totient is φ = 45410256.

The previous prime is 90820493. The next prime is 90820523. The reversal of 90820516 is 61502809.

It can be written as a sum of positive squares in only one way, i.e., 54169600 + 36650916 = 7360^2 + 6054^2 .

It is a super-2 number, since 2×90820516² = 16496732253012512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11352561 + ... + 11352568.

Almost surely, 2^90820516 is an apocalyptic number.

It is an amenable number.

90820516 is a deficient number, since it is larger than the sum of its proper divisors (68115394).

90820516 is a wasteful number, since it uses less digits than its factorization.

90820516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22705133 (or 22705131 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 90820516 is about 9529.9798530742. The cubic root of 90820516 is about 449.4982324872.

The spelling of 90820516 in words is "ninety million, eight hundred twenty thousand, five hundred sixteen".