791024640 has 264 divisors, whose sum is σ = 2945911392. Its totient is φ = 180633600.

The previous prime is 791024599. The next prime is 791024651. The reversal of 791024640 is 46420197.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 752115 + ... + 753165.

Almost surely, 2^791024640 is an apocalyptic number.

791024640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 791024640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1472955696).

791024640 is an abundant number, since it is smaller than the sum of its proper divisors (2154886752).

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

791024640 is a wasteful number, since it uses less digits than its factorization.

791024640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093 (or 1068 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 791024640 is about 28125.1602662100. The cubic root of 791024640 is about 924.8330412080.

The spelling of 791024640 in words is "seven hundred ninety-one million, twenty-four thousand, six hundred forty".