691357004 has 12 divisors (see below), whose sum is σ = 1302942144. Its totient is φ = 319087824.

The previous prime is 691356983. The next prime is 691357021. The reversal of 691357004 is 400753196.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6647612 + ... + 6647715.

It is an arithmetic number, because the mean of its divisors is an integer number (108578512).

Almost surely, 2^691357004 is an apocalyptic number.

It is an amenable number.

691357004 is a deficient number, since it is larger than the sum of its proper divisors (611585140).

691357004 is a wasteful number, since it uses less digits than its factorization.

691357004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13295344 (or 13295342 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 691357004 is about 26293.6685154430. The cubic root of 691357004 is about 884.2344999390.

The spelling of 691357004 in words is "six hundred ninety-one million, three hundred fifty-seven thousand, four".