76669613 has 2 divisors, whose sum is σ = 76669614. Its totient is φ = 76669612.

The previous prime is 76669597. The next prime is 76669639. The reversal of 76669613 is 31696667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76352644 + 316969 = 8738^2 + 563^2 .

It is an emirp because it is prime and its reverse (31696667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76669613 - 2⁴ = 76669597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76669013) 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, 38334806 + 38334807.

It is an arithmetic number, because the mean of its divisors is an integer number (38334807).

Almost surely, 2^76669613 is an apocalyptic number.

It is an amenable number.

76669613 is a deficient number, since it is larger than the sum of its proper divisors (1).

76669613 is an equidigital number, since it uses as much as digits as its factorization.

76669613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 44.

The square root of 76669613 is about 8756.1186035823. The cubic root of 76669613 is about 424.8227413043.

The spelling of 76669613 in words is "seventy-six million, six hundred sixty-nine thousand, six hundred thirteen".