77764319 has 2 divisors, whose sum is σ = 77764320. Its totient is φ = 77764318.

The previous prime is 77764187. The next prime is 77764333. The reversal of 77764319 is 91346777.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77764319 - 2¹⁶ = 77698783 is a prime.

It is a super-2 number, since 2×77764319² = 12094578619067522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77764319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77764369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38882159 + 38882160.

It is an arithmetic number, because the mean of its divisors is an integer number (38882160).

Almost surely, 2^77764319 is an apocalyptic number.

77764319 is a deficient number, since it is larger than the sum of its proper divisors (1).

77764319 is an equidigital number, since it uses as much as digits as its factorization.

77764319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 222264, while the sum is 44.

The square root of 77764319 is about 8818.4079628922. The cubic root of 77764319 is about 426.8350987702.

The spelling of 77764319 in words is "seventy-seven million, seven hundred sixty-four thousand, three hundred nineteen".