686034492 has 48 divisors (see below), whose sum is σ = 1880602752. Its totient is φ = 191897280.

The previous prime is 686034467. The next prime is 686034493. The reversal of 686034492 is 294430686.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686034493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198178 + ... + 201609.

It is an arithmetic number, because the mean of its divisors is an integer number (39179224).

Almost surely, 2^686034492 is an apocalyptic number.

It is an amenable number.

686034492 is an abundant number, since it is smaller than the sum of its proper divisors (1194568260).

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

686034492 is a wasteful number, since it uses less digits than its factorization.

686034492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399818 (or 399816 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 686034492 is about 26192.2601544808. The cubic root of 686034492 is about 881.9595160382.

The spelling of 686034492 in words is "six hundred eighty-six million, thirty-four thousand, four hundred ninety-two".