791660646 has 24 divisors (see below), whose sum is σ = 1960302864. Its totient is φ = 226188720.

The previous prime is 791660633. The next prime is 791660687. The reversal of 791660646 is 646066197.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3141385 + ... + 3141636.

It is an arithmetic number, because the mean of its divisors is an integer number (81679286).

Almost surely, 2^791660646 is an apocalyptic number.

791660646 is an abundant number, since it is smaller than the sum of its proper divisors (1168642218).

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

791660646 is a wasteful number, since it uses less digits than its factorization.

791660646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6283036 (or 6283033 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 791660646 is about 28136.4647032992. The cubic root of 791660646 is about 925.0808387105.

The spelling of 791660646 in words is "seven hundred ninety-one million, six hundred sixty thousand, six hundred forty-six".