791213965 has 8 divisors (see below), whose sum is σ = 959245560. Its totient is φ = 626445312.

The previous prime is 791213963. The next prime is 791213987. The reversal of 791213965 is 569312197.

It can be written as a sum of positive squares in 4 ways, for example, as 103673124 + 687540841 = 10182^2 + 26221^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 791213965 - 2¹ = 791213963 is a prime.

It is a super-2 number, since 2×791213965² = 1252039076822042450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791213963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 815200 + ... + 816169.

It is an arithmetic number, because the mean of its divisors is an integer number (119905695).

Almost surely, 2^791213965 is an apocalyptic number.

It is an amenable number.

791213965 is a deficient number, since it is larger than the sum of its proper divisors (168031595).

791213965 is a wasteful number, since it uses less digits than its factorization.

791213965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631471.

The product of its digits is 102060, while the sum is 43.

The square root of 791213965 is about 28128.5258234412. The cubic root of 791213965 is about 924.9068189555.

The spelling of 791213965 in words is "seven hundred ninety-one million, two hundred thirteen thousand, nine hundred sixty-five".