691914374 has 16 divisors (see below), whose sum is σ = 1097044080. Its totient is φ = 326384640.

The previous prime is 691914373. The next prime is 691914403. The reversal of 691914374 is 473419196.

691914374 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (691914373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28619 + ... + 46934.

It is an arithmetic number, because the mean of its divisors is an integer number (68565255).

Almost surely, 2^691914374 is an apocalyptic number.

691914374 is a deficient number, since it is larger than the sum of its proper divisors (405129706).

691914374 is a wasteful number, since it uses less digits than its factorization.

691914374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75815.

The product of its digits is 163296, while the sum is 44.

The square root of 691914374 is about 26304.2653195257. The cubic root of 691914374 is about 884.4720585356.

The spelling of 691914374 in words is "six hundred ninety-one million, nine hundred fourteen thousand, three hundred seventy-four".