681294620 has 12 divisors (see below), whose sum is σ = 1430718744. Its totient is φ = 272517840.

The previous prime is 681294599. The next prime is 681294631. The reversal of 681294620 is 26492186.

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, 17032346 + ... + 17032385.

It is an arithmetic number, because the mean of its divisors is an integer number (119226562).

Almost surely, 2^681294620 is an apocalyptic number.

It is an amenable number.

681294620 is an abundant number, since it is smaller than the sum of its proper divisors (749424124).

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

681294620 is a wasteful number, since it uses less digits than its factorization.

681294620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34064740 (or 34064738 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 681294620 is about 26101.6210224576. The cubic root of 681294620 is about 879.9236417905.

The spelling of 681294620 in words is "six hundred eighty-one million, two hundred ninety-four thousand, six hundred twenty".