90662916609 has 12 divisors (see below), whose sum is σ = 134151633252. Its totient is φ = 58967750400.

The previous prime is 90662916587. The next prime is 90662916667. The reversal of 90662916609 is 90661926609.

It is a happy number.

90662916609 is a `hidden beast` number, since 9 + 0 + 6 + 6 + 29 + 1 + 6 + 609 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4092800625 + 86570115984 = 63975^2 + 294228^2 .

It is not a de Polignac number, because 90662916609 - 2⁸ = 90662916353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90662916209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122849112 + ... + 122849849.

It is an arithmetic number, because the mean of its divisors is an integer number (11179302771).

Almost surely, 2^90662916609 is an apocalyptic number.

It is an amenable number.

90662916609 is a deficient number, since it is larger than the sum of its proper divisors (43488716643).

90662916609 is a wasteful number, since it uses less digits than its factorization.

90662916609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245699008 (or 245699005 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 54.

The spelling of 90662916609 in words is "ninety billion, six hundred sixty-two million, nine hundred sixteen thousand, six hundred nine".