77711693 has 2 divisors, whose sum is σ = 77711694. Its totient is φ = 77711692.

The previous prime is 77711671. The next prime is 77711713. The reversal of 77711693 is 39611777.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71961289 + 5750404 = 8483^2 + 2398^2 .

It is an emirp because it is prime and its reverse (39611777) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77711693 - 2⁶ = 77711629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77711693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77711603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38855846 + 38855847.

It is an arithmetic number, because the mean of its divisors is an integer number (38855847).

Almost surely, 2^77711693 is an apocalyptic number.

It is an amenable number.

77711693 is a deficient number, since it is larger than the sum of its proper divisors (1).

77711693 is an equidigital number, since it uses as much as digits as its factorization.

77711693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55566, while the sum is 41.

The square root of 77711693 is about 8815.4235859657. The cubic root of 77711693 is about 426.7387919926.

The spelling of 77711693 in words is "seventy-seven million, seven hundred eleven thousand, six hundred ninety-three".