90687705 has 8 divisors (see below), whose sum is σ = 145100352. Its totient is φ = 48366768.

The previous prime is 90687691. The next prime is 90687721. The reversal of 90687705 is 50778609.

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

It is not a de Polignac number, because 90687705 - 2¹¹ = 90685657 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 3022909 + ... + 3022938.

It is an arithmetic number, because the mean of its divisors is an integer number (18137544).

Almost surely, 2^90687705 is an apocalyptic number.

It is an amenable number.

90687705 is a deficient number, since it is larger than the sum of its proper divisors (54412647).

90687705 is a wasteful number, since it uses less digits than its factorization.

90687705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6045855.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 90687705 is about 9523.0092407810. The cubic root of 90687705 is about 449.2790183129.

The spelling of 90687705 in words is "ninety million, six hundred eighty-seven thousand, seven hundred five".