761407991 has 2 divisors, whose sum is σ = 761407992. Its totient is φ = 761407990.

The previous prime is 761407979. The next prime is 761408069. The reversal of 761407991 is 199704167.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 761407991 - 2¹⁰ = 761406967 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (761407901) 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, 380703995 + 380703996.

It is an arithmetic number, because the mean of its divisors is an integer number (380703996).

Almost surely, 2^761407991 is an apocalyptic number.

761407991 is a deficient number, since it is larger than the sum of its proper divisors (1).

761407991 is an equidigital number, since it uses as much as digits as its factorization.

761407991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 761407991 is about 27593.6222884927. The cubic root of 761407991 is about 913.1437343161.

The spelling of 761407991 in words is "seven hundred sixty-one million, four hundred seven thousand, nine hundred ninety-one".