686954012 has 6 divisors (see below), whose sum is σ = 1202169528. Its totient is φ = 343477004.

The previous prime is 686953997. The next prime is 686954027. The reversal of 686954012 is 210459686.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (686953997) and next prime (686954027).

It is a super-2 number, since 2×686954012² = 943811629205792288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 85869248 + ... + 85869255.

It is an arithmetic number, because the mean of its divisors is an integer number (200361588).

Almost surely, 2^686954012 is an apocalyptic number.

It is an amenable number.

686954012 is a deficient number, since it is larger than the sum of its proper divisors (515215516).

686954012 is a wasteful number, since it uses less digits than its factorization.

686954012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171738507 (or 171738505 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 686954012 is about 26209.8075536620. The cubic root of 686954012 is about 882.3533822182.

The spelling of 686954012 in words is "six hundred eighty-six million, nine hundred fifty-four thousand, twelve".