761131643 has 2 divisors, whose sum is σ = 761131644. Its totient is φ = 761131642.

The previous prime is 761131639. The next prime is 761131669. The reversal of 761131643 is 346131167.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 761131643 - 2² = 761131639 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (761131603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380565821 + 380565822.

It is an arithmetic number, because the mean of its divisors is an integer number (380565822).

Almost surely, 2^761131643 is an apocalyptic number.

761131643 is a deficient number, since it is larger than the sum of its proper divisors (1).

761131643 is an equidigital number, since it uses as much as digits as its factorization.

761131643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 32.

The square root of 761131643 is about 27588.6143725994. The cubic root of 761131643 is about 913.0332477864.

The spelling of 761131643 in words is "seven hundred sixty-one million, one hundred thirty-one thousand, six hundred forty-three".