686900736 has 120 divisors (see below), whose sum is σ = 2056238184. Its totient is φ = 228925440.

The previous prime is 686900729. The next prime is 686900743. The reversal of 686900736 is 637009686.

It is an interprime number because it is at equal distance from previous prime (686900729) and next prime (686900743).

It is a super-2 number, since 2×686900736² = 943665242234683392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 686900691 and 686900700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121656 + ... + 127176.

Almost surely, 2^686900736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 686900736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1028119092).

686900736 is an abundant number, since it is smaller than the sum of its proper divisors (1369337448).

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

686900736 is an frugal number, since it uses more digits than its factorization.

686900736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5554 (or 5526 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 686900736 is about 26208.7911968484. The cubic root of 686900736 is about 882.3305716305.

The spelling of 686900736 in words is "six hundred eighty-six million, nine hundred thousand, seven hundred thirty-six".