681275254 has 12 divisors (see below), whose sum is σ = 1123260012. Its totient is φ = 309670460.

The previous prime is 681275173. The next prime is 681275263. The reversal of 681275254 is 452572186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1407352 + ... + 1407835.

It is an arithmetic number, because the mean of its divisors is an integer number (93605001).

Almost surely, 2^681275254 is an apocalyptic number.

681275254 is a deficient number, since it is larger than the sum of its proper divisors (441984758).

681275254 is a wasteful number, since it uses less digits than its factorization.

681275254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2815211 (or 2815200 counting only the distinct ones).

The product of its digits is 134400, while the sum is 40.

The square root of 681275254 is about 26101.2500466932. The cubic root of 681275254 is about 879.9153043487.

The spelling of 681275254 in words is "six hundred eighty-one million, two hundred seventy-five thousand, two hundred fifty-four".