681475254 has 16 divisors (see below), whose sum is σ = 1364722992. Its totient is φ = 226863008.

The previous prime is 681475247. The next prime is 681475271. The reversal of 681475254 is 452574186.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68829 + ... + 78104.

It is an arithmetic number, because the mean of its divisors is an integer number (85295187).

Almost surely, 2^681475254 is an apocalyptic number.

681475254 is an abundant number, since it is smaller than the sum of its proper divisors (683247738).

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

681475254 is a wasteful number, since it uses less digits than its factorization.

681475254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147711.

The product of its digits is 268800, while the sum is 42.

The square root of 681475254 is about 26105.0809996828. The cubic root of 681475254 is about 880.0014006520.

The spelling of 681475254 in words is "six hundred eighty-one million, four hundred seventy-five thousand, two hundred fifty-four".