686755252 has 12 divisors (see below), whose sum is σ = 1254074976. Its totient is φ = 328448120.

The previous prime is 686755243. The next prime is 686755283. The reversal of 686755252 is 252557686.

It is a super-2 number, since 2×686755252² = 943265552299167008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3732274 + ... + 3732457.

It is an arithmetic number, because the mean of its divisors is an integer number (104506248).

Almost surely, 2^686755252 is an apocalyptic number.

It is an amenable number.

686755252 is a deficient number, since it is larger than the sum of its proper divisors (567319724).

686755252 is a wasteful number, since it uses less digits than its factorization.

686755252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7464758 (or 7464756 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 46.

The square root of 686755252 is about 26206.0155689490. The cubic root of 686755252 is about 882.2682753686.

The spelling of 686755252 in words is "six hundred eighty-six million, seven hundred fifty-five thousand, two hundred fifty-two".