8607206521 has 4 divisors (see below), whose sum is σ = 8627749200. Its totient is φ = 8586663844.

The previous prime is 8607206477. The next prime is 8607206551. The reversal of 8607206521 is 1256027068.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8607206521 - 2⁷ = 8607206393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8607206551) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10270711 + ... + 10271548.

It is an arithmetic number, because the mean of its divisors is an integer number (2156937300).

Almost surely, 2^8607206521 is an apocalyptic number.

It is an amenable number.

8607206521 is a deficient number, since it is larger than the sum of its proper divisors (20542679).

8607206521 is a wasteful number, since it uses less digits than its factorization.

8607206521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20542678.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 8607206521 is about 92775.0317757962. The cubic root of 8607206521 is about 2049.3717306131.

The spelling of 8607206521 in words is "eight billion, six hundred seven million, two hundred six thousand, five hundred twenty-one".