77775023 has 2 divisors, whose sum is σ = 77775024. Its totient is φ = 77775022.

The previous prime is 77774987. The next prime is 77775059. The reversal of 77775023 is 32057777.

It is a balanced prime because it is at equal distance from previous prime (77774987) and next prime (77775059).

It is a cyclic number.

It is not a de Polignac number, because 77775023 - 2⁶ = 77774959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77775623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38887511 + 38887512.

It is an arithmetic number, because the mean of its divisors is an integer number (38887512).

Almost surely, 2^77775023 is an apocalyptic number.

77775023 is a deficient number, since it is larger than the sum of its proper divisors (1).

77775023 is an equidigital number, since it uses as much as digits as its factorization.

77775023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72030, while the sum is 38.

The square root of 77775023 is about 8819.0148542794. The cubic root of 77775023 is about 426.8546820158.

The spelling of 77775023 in words is "seventy-seven million, seven hundred seventy-five thousand, twenty-three".