8520690 has 16 divisors (see below), whose sum is σ = 20449728. Its totient is φ = 2272176.

The previous prime is 8520679. The next prime is 8520709. The reversal of 8520690 is 960258.

It is a super-3 number, since 3×8520690³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 284023 = 8520690 / (8 + 5 + 2 + 0 + 6 + 9 + 0).

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, 141982 + ... + 142041.

It is an arithmetic number, because the mean of its divisors is an integer number (1278108).

Almost surely, 2^8520690 is an apocalyptic number.

8520690 is an abundant number, since it is smaller than the sum of its proper divisors (11929038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8520690 is a wasteful number, since it uses less digits than its factorization.

8520690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284033.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 8520690 is about 2919.0220965248. The cubic root of 8520690 is about 204.2482080696.

The spelling of 8520690 in words is "eight million, five hundred twenty thousand, six hundred ninety".