76681919 has 2 divisors, whose sum is σ = 76681920. Its totient is φ = 76681918.

The previous prime is 76681897. The next prime is 76681961. The reversal of 76681919 is 91918667.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76681919 - 2²⁰ = 75633343 is a prime.

It is a super-2 number, since 2×76681919² = 11760233403045122, 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 (76681999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38340959 + 38340960.

It is an arithmetic number, because the mean of its divisors is an integer number (38340960).

Almost surely, 2^76681919 is an apocalyptic number.

76681919 is a deficient number, since it is larger than the sum of its proper divisors (1).

76681919 is an equidigital number, since it uses as much as digits as its factorization.

76681919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 47.

The square root of 76681919 is about 8756.8212840048. The cubic root of 76681919 is about 424.8454690785.

The spelling of 76681919 in words is "seventy-six million, six hundred eighty-one thousand, nine hundred nineteen".