76927997 has 2 divisors, whose sum is σ = 76927998. Its totient is φ = 76927996.

The previous prime is 76927973. The next prime is 76927999. The reversal of 76927997 is 79972967.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48080356 + 28847641 = 6934^2 + 5371^2 .

It is an emirp because it is prime and its reverse (79972967) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76927997 - 2⁶ = 76927933 is a prime.

Together with 76927999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76927999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38463998 + 38463999.

It is an arithmetic number, because the mean of its divisors is an integer number (38463999).

Almost surely, 2^76927997 is an apocalyptic number.

It is an amenable number.

76927997 is a deficient number, since it is larger than the sum of its proper divisors (1).

76927997 is an equidigital number, since it uses as much as digits as its factorization.

76927997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3000564, while the sum is 56.

The square root of 76927997 is about 8770.8606761252. The cubic root of 76927997 is about 425.2994374221.

The spelling of 76927997 in words is "seventy-six million, nine hundred twenty-seven thousand, nine hundred ninety-seven".