791508645 has 16 divisors (see below), whose sum is σ = 1407126720. Its totient is φ = 422137872.

The previous prime is 791508643. The next prime is 791508703. The reversal of 791508645 is 546805197.

It is not a de Polignac number, because 791508645 - 2¹ = 791508643 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 791508645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791508643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2931379 + ... + 2931648.

It is an arithmetic number, because the mean of its divisors is an integer number (87945420).

Almost surely, 2^791508645 is an apocalyptic number.

It is an amenable number.

791508645 is a deficient number, since it is larger than the sum of its proper divisors (615618075).

791508645 is a wasteful number, since it uses less digits than its factorization.

791508645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5863041 (or 5863035 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 791508645 is about 28133.7634347060. The cubic root of 791508645 is about 925.0216289075.

The spelling of 791508645 in words is "seven hundred ninety-one million, five hundred eight thousand, six hundred forty-five".