76628693 has 2 divisors, whose sum is σ = 76628694. Its totient is φ = 76628692.

The previous prime is 76628689. The next prime is 76628711. The reversal of 76628693 is 39682667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41499364 + 35129329 = 6442^2 + 5927^2 .

It is a cyclic number.

It is not a de Polignac number, because 76628693 - 2² = 76628689 is a prime.

It is a Sophie Germain 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 (76628633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38314346 + 38314347.

It is an arithmetic number, because the mean of its divisors is an integer number (38314347).

Almost surely, 2^76628693 is an apocalyptic number.

It is an amenable number.

76628693 is a deficient number, since it is larger than the sum of its proper divisors (1).

76628693 is an equidigital number, since it uses as much as digits as its factorization.

76628693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 47.

The square root of 76628693 is about 8753.7816399542. The cubic root of 76628693 is about 424.7471492520.

The spelling of 76628693 in words is "seventy-six million, six hundred twenty-eight thousand, six hundred ninety-three".