6791656642 has 16 divisors (see below), whose sum is σ = 10537293312. Its totient is φ = 3280834080.

The previous prime is 6791656639. The next prime is 6791656657. The reversal of 6791656642 is 2466561976.

It is a happy number.

It is a super-2 number, since 2×6791656642² = 92253199885645432328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6791656642.

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, 393618 + ... + 410509.

It is an arithmetic number, because the mean of its divisors is an integer number (658580832).

Almost surely, 2^6791656642 is an apocalyptic number.

6791656642 is a deficient number, since it is larger than the sum of its proper divisors (3745636670).

6791656642 is a wasteful number, since it uses less digits than its factorization.

6791656642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804273.

The product of its digits is 3265920, while the sum is 52.

The square root of 6791656642 is about 82411.5079464027. The cubic root of 6791656642 is about 1893.7613143104.

The spelling of 6791656642 in words is "six billion, seven hundred ninety-one million, six hundred fifty-six thousand, six hundred forty-two".