76668451 has 2 divisors, whose sum is σ = 76668452. Its totient is φ = 76668450.

The previous prime is 76668443. The next prime is 76668457. The reversal of 76668451 is 15486667.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76668451 - 2³ = 76668443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76668398 and 76668407.

It is not a weakly prime, because it can be changed into another prime (76668457) 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, 38334225 + 38334226.

It is an arithmetic number, because the mean of its divisors is an integer number (38334226).

Almost surely, 2^76668451 is an apocalyptic number.

76668451 is a deficient number, since it is larger than the sum of its proper divisors (1).

76668451 is an equidigital number, since it uses as much as digits as its factorization.

76668451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 76668451 is about 8756.0522497299. The cubic root of 76668451 is about 424.8205950975.

The spelling of 76668451 in words is "seventy-six million, six hundred sixty-eight thousand, four hundred fifty-one".