90646705 has 8 divisors (see below), whose sum is σ = 108829800. Its totient is φ = 72481536.

The previous prime is 90646687. The next prime is 90646711. The reversal of 90646705 is 50764609.

It can be written as a sum of positive squares in 4 ways, for example, as 9790641 + 80856064 = 3129^2 + 8992^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 90646705 - 2¹⁵ = 90613937 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12511 + ... + 18379.

It is an arithmetic number, because the mean of its divisors is an integer number (13603725).

Almost surely, 2^90646705 is an apocalyptic number.

It is an amenable number.

90646705 is a deficient number, since it is larger than the sum of its proper divisors (18183095).

90646705 is a wasteful number, since it uses less digits than its factorization.

90646705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8963.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 90646705 is about 9520.8563165295. The cubic root of 90646705 is about 449.2113016126.

The spelling of 90646705 in words is "ninety million, six hundred forty-six thousand, seven hundred five".