681144258 has 8 divisors (see below), whose sum is σ = 1362288528. Its totient is φ = 227048084.

The previous prime is 681144229. The next prime is 681144263. The reversal of 681144258 is 852441186.

681144258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

681144258 is an admirable 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, 56762016 + ... + 56762027.

It is an arithmetic number, because the mean of its divisors is an integer number (170286066).

Almost surely, 2^681144258 is an apocalyptic number.

681144258 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

681144258 is a wasteful number, since it uses less digits than its factorization.

681144258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113524048.

The product of its digits is 61440, while the sum is 39.

The square root of 681144258 is about 26098.7405443251. The cubic root of 681144258 is about 879.8589038591.

The spelling of 681144258 in words is "six hundred eighty-one million, one hundred forty-four thousand, two hundred fifty-eight".