76876661 has 2 divisors, whose sum is σ = 76876662. Its totient is φ = 76876660.

The previous prime is 76876643. The next prime is 76876691. The reversal of 76876661 is 16667867.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64096036 + 12780625 = 8006^2 + 3575^2 .

It is an emirp because it is prime and its reverse (16667867) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76876661 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76876691) 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, 38438330 + 38438331.

It is an arithmetic number, because the mean of its divisors is an integer number (38438331).

Almost surely, 2^76876661 is an apocalyptic number.

It is an amenable number.

76876661 is a deficient number, since it is larger than the sum of its proper divisors (1).

76876661 is an equidigital number, since it uses as much as digits as its factorization.

76876661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 47.

The square root of 76876661 is about 8767.9336790375. The cubic root of 76876661 is about 425.2048120097.

The spelling of 76876661 in words is "seventy-six million, eight hundred seventy-six thousand, six hundred sixty-one".