77713723 has 2 divisors, whose sum is σ = 77713724. Its totient is φ = 77713722.

The previous prime is 77713721. The next prime is 77713729. The reversal of 77713723 is 32731777.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77713723 - 2¹ = 77713721 is a prime.

Together with 77713721, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (77713721) 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, 38856861 + 38856862.

It is an arithmetic number, because the mean of its divisors is an integer number (38856862).

Almost surely, 2^77713723 is an apocalyptic number.

77713723 is a deficient number, since it is larger than the sum of its proper divisors (1).

77713723 is an equidigital number, since it uses as much as digits as its factorization.

77713723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43218, while the sum is 37.

The square root of 77713723 is about 8815.5387243208. The cubic root of 77713723 is about 426.7425077449.

The spelling of 77713723 in words is "seventy-seven million, seven hundred thirteen thousand, seven hundred twenty-three".