8690985 has 12 divisors (see below), whose sum is σ = 15064452. Its totient is φ = 4635168.

The previous prime is 8690971. The next prime is 8691019. The reversal of 8690985 is 5890968.

It can be written as a sum of positive squares in 2 ways, for example, as 1089936 + 7601049 = 1044^2 + 2757^2 .

It is not a de Polignac number, because 8690985 - 2⁵ = 8690953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 193133 = 8690985 / (8 + 6 + 9 + 0 + 9 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 8690985.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96522 + ... + 96611.

It is an arithmetic number, because the mean of its divisors is an integer number (1255371).

Almost surely, 2^8690985 is an apocalyptic number.

It is an amenable number.

8690985 is a deficient number, since it is larger than the sum of its proper divisors (6373467).

8690985 is a wasteful number, since it uses less digits than its factorization.

8690985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193144 (or 193141 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 8690985 is about 2948.0476590449. The cubic root of 8690985 is about 205.5999478291.

The spelling of 8690985 in words is "eight million, six hundred ninety thousand, nine hundred eighty-five".