90646635 has 32 divisors (see below), whose sum is σ = 158533632. Its totient is φ = 44029440.

The previous prime is 90646609. The next prime is 90646639. The reversal of 90646635 is 53664609.

It is a happy number.

It is not a de Polignac number, because 90646635 - 2²⁶ = 23537771 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 90646593 and 90646602.

It is not an unprimeable number, because it can be changed into a prime (90646639) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2172 + ... + 13638.

It is an arithmetic number, because the mean of its divisors is an integer number (4954176).

Almost surely, 2^90646635 is an apocalyptic number.

90646635 is a deficient number, since it is larger than the sum of its proper divisors (67886997).

90646635 is a wasteful number, since it uses less digits than its factorization.

90646635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11523.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 90646635 is about 9520.8526403889. The cubic root of 90646635 is about 449.2111859813.

The spelling of 90646635 in words is "ninety million, six hundred forty-six thousand, six hundred thirty-five".