686554552 has 16 divisors (see below), whose sum is σ = 1298683440. Its totient is φ = 340238976.

The previous prime is 686554549. The next prime is 686554559. The reversal of 686554552 is 255455686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686554559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378828 + ... + 380635.

It is an arithmetic number, because the mean of its divisors is an integer number (81167715).

Almost surely, 2^686554552 is an apocalyptic number.

It is an amenable number.

686554552 is a deficient number, since it is larger than the sum of its proper divisors (612128888).

686554552 is a wasteful number, since it uses less digits than its factorization.

686554552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759582 (or 759578 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 46.

The square root of 686554552 is about 26202.1860156743. The cubic root of 686554552 is about 882.1823211686.

The spelling of 686554552 in words is "six hundred eighty-six million, five hundred fifty-four thousand, five hundred fifty-two".