691274004 has 24 divisors (see below), whose sum is σ = 1616727168. Its totient is φ = 229888320.

The previous prime is 691273949. The next prime is 691274029. The reversal of 691274004 is 400472196.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61657 + ... + 72000.

It is an arithmetic number, because the mean of its divisors is an integer number (67363632).

Almost surely, 2^691274004 is an apocalyptic number.

It is an amenable number.

691274004 is an abundant number, since it is smaller than the sum of its proper divisors (925453164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

691274004 is a wasteful number, since it uses less digits than its factorization.

691274004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134095 (or 134093 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 691274004 is about 26292.0901413334. The cubic root of 691274004 is about 884.1991133007.

The spelling of 691274004 in words is "six hundred ninety-one million, two hundred seventy-four thousand, four".