90446565 has 64 divisors (see below), whose sum is σ = 164229120. Its totient is φ = 42128640.

The previous prime is 90446549. The next prime is 90446569. The reversal of 90446565 is 56564409.

It is not a de Polignac number, because 90446565 - 2⁴ = 90446549 is a prime.

It is a super-2 number, since 2×90446565² = 16361162240598450, which contains 22 as substring.

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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (90446569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 829731 + ... + 829839.

It is an arithmetic number, because the mean of its divisors is an integer number (2566080).

Almost surely, 2^90446565 is an apocalyptic number.

It is an amenable number.

90446565 is a deficient number, since it is larger than the sum of its proper divisors (73782555).

90446565 is a wasteful number, since it uses less digits than its factorization.

90446565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 90446565 is about 9510.3398992886. The cubic root of 90446565 is about 448.8804515695.

The spelling of 90446565 in words is "ninety million, four hundred forty-six thousand, five hundred sixty-five".