77774023 has 2 divisors, whose sum is σ = 77774024. Its totient is φ = 77774022.

The previous prime is 77774003. The next prime is 77774029. The reversal of 77774023 is 32047777.

It is a strong prime.

It is an emirp because it is prime and its reverse (32047777) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77774023 - 2⁵ = 77773991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77774029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38887011 + 38887012.

It is an arithmetic number, because the mean of its divisors is an integer number (38887012).

Almost surely, 2^77774023 is an apocalyptic number.

77774023 is a deficient number, since it is larger than the sum of its proper divisors (1).

77774023 is an equidigital number, since it uses as much as digits as its factorization.

77774023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57624, while the sum is 37.

The square root of 77774023 is about 8818.9581584221. The cubic root of 77774023 is about 426.8528525660.

The spelling of 77774023 in words is "seventy-seven million, seven hundred seventy-four thousand, twenty-three".