77830601 has 2 divisors, whose sum is σ = 77830602. Its totient is φ = 77830600.

The previous prime is 77830591. The next prime is 77830619. The reversal of 77830601 is 10603877.

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., 66406201 + 11424400 = 8149^2 + 3380^2 .

It is an emirp because it is prime and its reverse (10603877) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77830601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (77835601) 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, 38915300 + 38915301.

It is an arithmetic number, because the mean of its divisors is an integer number (38915301).

Almost surely, 2^77830601 is an apocalyptic number.

It is an amenable number.

77830601 is a deficient number, since it is larger than the sum of its proper divisors (1).

77830601 is an equidigital number, since it uses as much as digits as its factorization.

77830601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 77830601 is about 8822.1653237740. The cubic root of 77830601 is about 426.9563345338.

The spelling of 77830601 in words is "seventy-seven million, eight hundred thirty thousand, six hundred one".