6690372742 has 16 divisors (see below), whose sum is σ = 10250150400. Its totient is φ = 3274334280.

The previous prime is 6690372737. The next prime is 6690372749. The reversal of 6690372742 is 2472730966.

It is a super-2 number, since 2×6690372742² = 89522174853793197128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6690372692 and 6690372701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6690372749) 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, 149742 + ... + 189217.

It is an arithmetic number, because the mean of its divisors is an integer number (640634400).

Almost surely, 2^6690372742 is an apocalyptic number.

6690372742 is a deficient number, since it is larger than the sum of its proper divisors (3559777658).

6690372742 is a wasteful number, since it uses less digits than its factorization.

6690372742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339171.

The product of its (nonzero) digits is 762048, while the sum is 46.

The square root of 6690372742 is about 81794.6987401995. The cubic root of 6690372742 is about 1884.3002458648.

The spelling of 6690372742 in words is "six billion, six hundred ninety million, three hundred seventy-two thousand, seven hundred forty-two".