761964491 has 2 divisors, whose sum is σ = 761964492. Its totient is φ = 761964490.

The previous prime is 761964457. The next prime is 761964499. The reversal of 761964491 is 194469167.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 761964491 - 2¹⁰ = 761963467 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (761964499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380982245 + 380982246.

It is an arithmetic number, because the mean of its divisors is an integer number (380982246).

Almost surely, 2^761964491 is an apocalyptic number.

761964491 is a deficient number, since it is larger than the sum of its proper divisors (1).

761964491 is an equidigital number, since it uses as much as digits as its factorization.

761964491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The square root of 761964491 is about 27603.7042985176. The cubic root of 761964491 is about 913.3661471537.

The spelling of 761964491 in words is "seven hundred sixty-one million, nine hundred sixty-four thousand, four hundred ninety-one".