76668433 has 2 divisors, whose sum is σ = 76668434. Its totient is φ = 76668432.

The previous prime is 76668413. The next prime is 76668443. The reversal of 76668433 is 33486667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73822464 + 2845969 = 8592^2 + 1687^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76668433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76668433.

It is not a weakly prime, because it can be changed into another prime (76668413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38334216 + 38334217.

It is an arithmetic number, because the mean of its divisors is an integer number (38334217).

Almost surely, 2^76668433 is an apocalyptic number.

It is an amenable number.

76668433 is a deficient number, since it is larger than the sum of its proper divisors (1).

76668433 is an equidigital number, since it uses as much as digits as its factorization.

76668433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 43.

The square root of 76668433 is about 8756.0512218694. The cubic root of 76668433 is about 424.8205618515.

The spelling of 76668433 in words is "seventy-six million, six hundred sixty-eight thousand, four hundred thirty-three".