686836396 has 24 divisors (see below), whose sum is σ = 1320238080. Its totient is φ = 311197392.

The previous prime is 686836351. The next prime is 686836417. The reversal of 686836396 is 693638686.

It is a super-3 number, since 3×686836396³ (a number of 27 digits) contains 333 as substring.

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 in 7 ways as a sum of consecutive naturals, for example, 194716 + ... + 198211.

It is an arithmetic number, because the mean of its divisors is an integer number (55009920).

Almost surely, 2^686836396 is an apocalyptic number.

It is an amenable number.

686836396 is a deficient number, since it is larger than the sum of its proper divisors (633401684).

686836396 is a wasteful number, since it uses less digits than its factorization.

686836396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392973 (or 392971 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 55.

The square root of 686836396 is about 26207.5637173698. The cubic root of 686836396 is about 882.3030223217.

It can be divided in two parts, 6868 and 36396, that added together give a square (43264 = 208²).

The spelling of 686836396 in words is "six hundred eighty-six million, eight hundred thirty-six thousand, three hundred ninety-six".