791611517 has 2 divisors, whose sum is σ = 791611518. Its totient is φ = 791611516.

The previous prime is 791611481. The next prime is 791611523. The reversal of 791611517 is 715116197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 449694436 + 341917081 = 21206^2 + 18491^2 .

It is a cyclic number.

It is not a de Polignac number, because 791611517 - 2²⁴ = 774834301 is a prime.

It is equal to p_40736972 and since 791611517 and 40736972 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (791611537) by changing a digit.

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 as a sum of consecutive naturals, namely, 395805758 + 395805759.

It is an arithmetic number, because the mean of its divisors is an integer number (395805759).

Almost surely, 2^791611517 is an apocalyptic number.

It is an amenable number.

791611517 is a deficient number, since it is larger than the sum of its proper divisors (1).

791611517 is an equidigital number, since it uses as much as digits as its factorization.

791611517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13230, while the sum is 38.

The square root of 791611517 is about 28135.5916411935. The cubic root of 791611517 is about 925.0617020443.

The spelling of 791611517 in words is "seven hundred ninety-one million, six hundred eleven thousand, five hundred seventeen".