90820546 has 16 divisors (see below), whose sum is σ = 137520504. Its totient is φ = 44982784.

The previous prime is 90820531. The next prime is 90820553. The reversal of 90820546 is 64502809.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 84842521 + 5978025 = 9211^2 + 2445^2 .

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, 138756 + ... + 139408.

Almost surely, 2^90820546 is an apocalyptic number.

90820546 is a deficient number, since it is larger than the sum of its proper divisors (46699958).

90820546 is a wasteful number, since it uses less digits than its factorization.

90820546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 90820546 is about 9529.9814270543. The cubic root of 90820546 is about 449.4982819802.

The spelling of 90820546 in words is "ninety million, eight hundred twenty thousand, five hundred forty-six".