6691371204 has 144 divisors (see below), whose sum is σ = 19031470080. Its totient is φ = 1822201920.

The previous prime is 6691371161. The next prime is 6691371223. The reversal of 6691371204 is 4021731966.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1218537 + ... + 1224015.

Almost surely, 2^6691371204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6691371204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9515735040).

6691371204 is an abundant number, since it is smaller than the sum of its proper divisors (12340098876).

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

6691371204 is a wasteful number, since it uses less digits than its factorization.

6691371204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5598 (or 5589 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 6691371204 is about 81800.8019765088. The cubic root of 6691371204 is about 1884.3939779920.

The spelling of 6691371204 in words is "six billion, six hundred ninety-one million, three hundred seventy-one thousand, two hundred four".