686372030 has 8 divisors (see below), whose sum is σ = 1235469672. Its totient is φ = 274548808.

The previous prime is 686372009. The next prime is 686372041. The reversal of 686372030 is 30273686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×686372030² = 942213127132641800, which contains 22 as substring.

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, 34318592 + ... + 34318611.

It is an arithmetic number, because the mean of its divisors is an integer number (154433709).

Almost surely, 2^686372030 is an apocalyptic number.

686372030 is a deficient number, since it is larger than the sum of its proper divisors (549097642).

686372030 is a wasteful number, since it uses less digits than its factorization.

686372030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68637210.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 686372030 is about 26198.7028304838. The cubic root of 686372030 is about 882.1041375524.

The spelling of 686372030 in words is "six hundred eighty-six million, three hundred seventy-two thousand, thirty".