90624605 has 8 divisors (see below), whose sum is σ = 108827064. Its totient is φ = 72448000.

The previous prime is 90624587. The next prime is 90624641. The reversal of 90624605 is 50642609.

It can be written as a sum of positive squares in 4 ways, for example, as 16216729 + 74407876 = 4027^2 + 8626^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90624605 - 2²⁰ = 89576029 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 2345 + ... + 13665.

It is an arithmetic number, because the mean of its divisors is an integer number (13603383).

Almost surely, 2^90624605 is an apocalyptic number.

It is an amenable number.

90624605 is a deficient number, since it is larger than the sum of its proper divisors (18202459).

90624605 is a wasteful number, since it uses less digits than its factorization.

90624605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12927.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 90624605 is about 9519.6956358909. The cubic root of 90624605 is about 449.1747921897.

The spelling of 90624605 in words is "ninety million, six hundred twenty-four thousand, six hundred five".