686653375 has 16 divisors (see below), whose sum is σ = 907354656. Its totient is φ = 517008000.

The previous prime is 686653351. The next prime is 686653391. The reversal of 686653375 is 573356686.

It is not a de Polignac number, because 686653375 - 2¹⁵ = 686620607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159441 + ... + 163690.

It is an arithmetic number, because the mean of its divisors is an integer number (56709666).

Almost surely, 2^686653375 is an apocalyptic number.

686653375 is a deficient number, since it is larger than the sum of its proper divisors (220701281).

686653375 is a wasteful number, since it uses less digits than its factorization.

686653375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323163 (or 323153 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 49.

The square root of 686653375 is about 26204.0717255926. The cubic root of 686653375 is about 882.2246463903.

The spelling of 686653375 in words is "six hundred eighty-six million, six hundred fifty-three thousand, three hundred seventy-five".