76863431 has 2 divisors, whose sum is σ = 76863432. Its totient is φ = 76863430.

The previous prime is 76863419. The next prime is 76863461. The reversal of 76863431 is 13436867.

It is a weak prime.

It is an emirp because it is prime and its reverse (13436867) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76863431 is a prime.

It is a super-2 number, since 2×76863431² = 11815974050183522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76863461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38431715 + 38431716.

It is an arithmetic number, because the mean of its divisors is an integer number (38431716).

Almost surely, 2^76863431 is an apocalyptic number.

76863431 is a deficient number, since it is larger than the sum of its proper divisors (1).

76863431 is an equidigital number, since it uses as much as digits as its factorization.

76863431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 38.

The square root of 76863431 is about 8767.1791928761. The cubic root of 76863431 is about 425.1804189004.

The spelling of 76863431 in words is "seventy-six million, eight hundred sixty-three thousand, four hundred thirty-one".