6690191374 has 8 divisors (see below), whose sum is σ = 10035704448. Its totient is φ = 3344956560.

The previous prime is 6690191357. The next prime is 6690191381. The reversal of 6690191374 is 4731910966.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7714 + ... + 115930.

It is an arithmetic number, because the mean of its divisors is an integer number (1254463056).

Almost surely, 2^6690191374 is an apocalyptic number.

6690191374 is a deficient number, since it is larger than the sum of its proper divisors (3345513074).

6690191374 is a wasteful number, since it uses less digits than its factorization.

6690191374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139130.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 6690191374 is about 81793.5900544780. The cubic root of 6690191374 is about 1884.2832186692.

The spelling of 6690191374 in words is "six billion, six hundred ninety million, one hundred ninety-one thousand, three hundred seventy-four".