681334478 has 32 divisors (see below), whose sum is σ = 1137784320. Its totient is φ = 303381760.

The previous prime is 681334469. The next prime is 681334481. The reversal of 681334478 is 874433186.

681334478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 457451 + ... + 458937.

It is an arithmetic number, because the mean of its divisors is an integer number (35555760).

Almost surely, 2^681334478 is an apocalyptic number.

681334478 is a deficient number, since it is larger than the sum of its proper divisors (456449842).

681334478 is a wasteful number, since it uses less digits than its factorization.

681334478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912.

The product of its digits is 387072, while the sum is 44.

The square root of 681334478 is about 26102.3845270887. The cubic root of 681334478 is about 879.9408009419.

The spelling of 681334478 in words is "six hundred eighty-one million, three hundred thirty-four thousand, four hundred seventy-eight".