686188962 has 32 divisors (see below), whose sum is σ = 1526419200. Its totient is φ = 228496464.

The previous prime is 686188949. The next prime is 686188963. The reversal of 686188962 is 269881686.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 686188899 and 686188908.

It is not an unprimeable number, because it can be changed into a prime (686188963) 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, 51783 + ... + 63669.

It is an arithmetic number, because the mean of its divisors is an integer number (47700600).

Almost surely, 2^686188962 is an apocalyptic number.

686188962 is an abundant number, since it is smaller than the sum of its proper divisors (840230238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686188962 is a wasteful number, since it uses less digits than its factorization.

686188962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12967 (or 12961 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 686188962 is about 26195.2087603821. The cubic root of 686188962 is about 882.0257061322.

The spelling of 686188962 in words is "six hundred eighty-six million, one hundred eighty-eight thousand, nine hundred sixty-two".