90790633 has 2 divisors, whose sum is σ = 90790634. Its totient is φ = 90790632.

The previous prime is 90790621. The next prime is 90790657. The reversal of 90790633 is 33609709.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52881984 + 37908649 = 7272^2 + 6157^2 .

It is a cyclic number.

It is not a de Polignac number, because 90790633 - 2²¹ = 88693481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90790592 and 90790601.

It is not a weakly prime, because it can be changed into another prime (90790613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45395316 + 45395317.

It is an arithmetic number, because the mean of its divisors is an integer number (45395317).

Almost surely, 2^90790633 is an apocalyptic number.

It is an amenable number.

90790633 is a deficient number, since it is larger than the sum of its proper divisors (1).

90790633 is an equidigital number, since it uses as much as digits as its factorization.

90790633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 37.

The square root of 90790633 is about 9528.4118823653. The cubic root of 90790633 is about 449.4489270741.

The spelling of 90790633 in words is "ninety million, seven hundred ninety thousand, six hundred thirty-three".