76699919 has 2 divisors, whose sum is σ = 76699920. Its totient is φ = 76699918.

The previous prime is 76699907. The next prime is 76699939. The reversal of 76699919 is 91999667.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76699919 is a prime.

It is a super-2 number, since 2×76699919² = 11765755149213122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76699939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38349959 + 38349960.

It is an arithmetic number, because the mean of its divisors is an integer number (38349960).

Almost surely, 2^76699919 is an apocalyptic number.

76699919 is a deficient number, since it is larger than the sum of its proper divisors (1).

76699919 is an equidigital number, since it uses as much as digits as its factorization.

76699919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1653372, while the sum is 56.

The square root of 76699919 is about 8757.8489939026. The cubic root of 76699919 is about 424.8787086404.

The spelling of 76699919 in words is "seventy-six million, six hundred ninety-nine thousand, nine hundred nineteen".