681254524 has 12 divisors (see below), whose sum is σ = 1221273648. Its totient is φ = 332319200.

The previous prime is 681254501. The next prime is 681254537. The reversal of 681254524 is 425452186.

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, 2076832 + ... + 2077159.

It is an arithmetic number, because the mean of its divisors is an integer number (101772804).

Almost surely, 2^681254524 is an apocalyptic number.

It is an amenable number.

681254524 is a deficient number, since it is larger than the sum of its proper divisors (540019124).

681254524 is a wasteful number, since it uses less digits than its factorization.

681254524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4154036 (or 4154034 counting only the distinct ones).

The product of its digits is 76800, while the sum is 37.

The square root of 681254524 is about 26100.8529362548. The cubic root of 681254524 is about 879.9063795032.

The spelling of 681254524 in words is "six hundred eighty-one million, two hundred fifty-four thousand, five hundred twenty-four".