680543682 has 96 divisors (see below), whose sum is σ = 1732300416. Its totient is φ = 173560320.

The previous prime is 680543663. The next prime is 680543737. The reversal of 680543682 is 286345086.

It is a super-2 number, since 2×680543682² = 926279406220234248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 524058 + ... + 525354.

It is an arithmetic number, because the mean of its divisors is an integer number (18044796).

Almost surely, 2^680543682 is an apocalyptic number.

680543682 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 680543682, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (866150208).

680543682 is an abundant number, since it is smaller than the sum of its proper divisors (1051756734).

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

680543682 is a wasteful number, since it uses less digits than its factorization.

680543682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384 (or 1353 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 680543682 is about 26087.2321644133. The cubic root of 680543682 is about 879.6002325046.

The spelling of 680543682 in words is "six hundred eighty million, five hundred forty-three thousand, six hundred eighty-two".