77748367 has 2 divisors, whose sum is σ = 77748368. Its totient is φ = 77748366.

The previous prime is 77748347. The next prime is 77748379. The reversal of 77748367 is 76384777.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77748367 - 2¹⁹ = 77224079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77748367.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77748317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38874183 + 38874184.

It is an arithmetic number, because the mean of its divisors is an integer number (38874184).

Almost surely, 2^77748367 is an apocalyptic number.

77748367 is a deficient number, since it is larger than the sum of its proper divisors (1).

77748367 is an equidigital number, since it uses as much as digits as its factorization.

77748367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1382976, while the sum is 49.

The square root of 77748367 is about 8817.5034448533. The cubic root of 77748367 is about 426.8059108375.

The spelling of 77748367 in words is "seventy-seven million, seven hundred forty-eight thousand, three hundred sixty-seven".