681462940 has 12 divisors (see below), whose sum is σ = 1431072216. Its totient is φ = 272585168.

The previous prime is 681462931. The next prime is 681462953. The reversal of 681462940 is 49264186.

It is a junction number, because it is equal to n+sod(n) for n = 681462893 and 681462902.

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, 17036554 + ... + 17036593.

It is an arithmetic number, because the mean of its divisors is an integer number (119256018).

Almost surely, 2^681462940 is an apocalyptic number.

It is an amenable number.

681462940 is an abundant number, since it is smaller than the sum of its proper divisors (749609276).

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

681462940 is a wasteful number, since it uses less digits than its factorization.

681462940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34073156 (or 34073154 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 681462940 is about 26104.8451441490. The cubic root of 681462940 is about 879.9961001893.

The spelling of 681462940 in words is "six hundred eighty-one million, four hundred sixty-two thousand, nine hundred forty".