681474734 has 4 divisors (see below), whose sum is σ = 1022212104. Its totient is φ = 340737366.

The previous prime is 681474719. The next prime is 681474743. The reversal of 681474734 is 437474186.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 170368682 + ... + 170368685.

It is an arithmetic number, because the mean of its divisors is an integer number (255553026).

Almost surely, 2^681474734 is an apocalyptic number.

681474734 is a deficient number, since it is larger than the sum of its proper divisors (340737370).

681474734 is a wasteful number, since it uses less digits than its factorization.

681474734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340737369.

The product of its digits is 451584, while the sum is 44.

The square root of 681474734 is about 26105.0710399340. The cubic root of 681474734 is about 880.0011768235.

The spelling of 681474734 in words is "six hundred eighty-one million, four hundred seventy-four thousand, seven hundred thirty-four".