791325666 has 64 divisors (see below), whose sum is σ = 1817907840. Its totient is φ = 254983680.

The previous prime is 791325637. The next prime is 791325671. The reversal of 791325666 is 666523197.

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 31 ways as a sum of consecutive naturals, for example, 248601 + ... + 251763.

It is an arithmetic number, because the mean of its divisors is an integer number (28404810).

Almost surely, 2^791325666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 791325666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (908953920).

791325666 is an abundant number, since it is smaller than the sum of its proper divisors (1026582174).

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

791325666 is a wasteful number, since it uses less digits than its factorization.

791325666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328 (or 3322 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 791325666 is about 28130.5113000102. The cubic root of 791325666 is about 924.9503420140.

The spelling of 791325666 in words is "seven hundred ninety-one million, three hundred twenty-five thousand, six hundred sixty-six".