761736491 has 2 divisors, whose sum is σ = 761736492. Its totient is φ = 761736490.

The previous prime is 761736487. The next prime is 761736523. The reversal of 761736491 is 194637167.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 761736491 - 2² = 761736487 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (761736421) 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, 380868245 + 380868246.

It is an arithmetic number, because the mean of its divisors is an integer number (380868246).

Almost surely, 2^761736491 is an apocalyptic number.

761736491 is a deficient number, since it is larger than the sum of its proper divisors (1).

761736491 is an equidigital number, since it uses as much as digits as its factorization.

761736491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 44.

The square root of 761736491 is about 27599.5741090329. The cubic root of 761736491 is about 913.2750369342.

The spelling of 761736491 in words is "seven hundred sixty-one million, seven hundred thirty-six thousand, four hundred ninety-one".