77651713 has 2 divisors, whose sum is σ = 77651714. Its totient is φ = 77651712.

The previous prime is 77651711. The next prime is 77651723. The reversal of 77651713 is 31715677.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49168144 + 28483569 = 7012^2 + 5337^2 .

It is a cyclic number.

It is not a de Polignac number, because 77651713 - 2¹ = 77651711 is a prime.

Together with 77651711, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (77651711) 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, 38825856 + 38825857.

It is an arithmetic number, because the mean of its divisors is an integer number (38825857).

Almost surely, 2^77651713 is an apocalyptic number.

It is an amenable number.

77651713 is a deficient number, since it is larger than the sum of its proper divisors (1).

77651713 is an equidigital number, since it uses as much as digits as its factorization.

77651713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30870, while the sum is 37.

The square root of 77651713 is about 8812.0209373333. The cubic root of 77651713 is about 426.6289741958.

The spelling of 77651713 in words is "seventy-seven million, six hundred fifty-one thousand, seven hundred thirteen".