681735674 has 8 divisors (see below), whose sum is σ = 1046385120. Its totient is φ = 332940636.

The previous prime is 681735673. The next prime is 681735697. The reversal of 681735674 is 476537186.

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

It is not an unprimeable number, because it can be changed into a prime (681735671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3963494 + ... + 3963665.

It is an arithmetic number, because the mean of its divisors is an integer number (130798140).

Almost surely, 2^681735674 is an apocalyptic number.

681735674 is a deficient number, since it is larger than the sum of its proper divisors (364649446).

681735674 is a wasteful number, since it uses less digits than its factorization.

681735674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7927204.

The product of its digits is 846720, while the sum is 47.

The square root of 681735674 is about 26110.0684411206. The cubic root of 681735674 is about 880.1134814052.

The spelling of 681735674 in words is "six hundred eighty-one million, seven hundred thirty-five thousand, six hundred seventy-four".