686490567 has 16 divisors (see below), whose sum is σ = 1079826432. Its totient is φ = 379625760.

The previous prime is 686490557. The next prime is 686490569. The reversal of 686490567 is 765094686.

686490567 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 686490567 - 2⁷ = 686490439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686490569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 526608 + ... + 527909.

It is an arithmetic number, because the mean of its divisors is an integer number (67489152).

Almost surely, 2^686490567 is an apocalyptic number.

686490567 is a deficient number, since it is larger than the sum of its proper divisors (393335865).

686490567 is a wasteful number, since it uses less digits than its factorization.

686490567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054558.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The square root of 686490567 is about 26200.9650013125. The cubic root of 686490567 is about 882.1549146601.

The spelling of 686490567 in words is "six hundred eighty-six million, four hundred ninety thousand, five hundred sixty-seven".