77700023 has 2 divisors, whose sum is σ = 77700024. Its totient is φ = 77700022.

The previous prime is 77700001. The next prime is 77700053. The reversal of 77700023 is 32000777.

It is a weak prime.

It is an emirp because it is prime and its reverse (32000777) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77700023 - 2⁸ = 77699767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77699965 and 77700001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77700053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38850011 + 38850012.

It is an arithmetic number, because the mean of its divisors is an integer number (38850012).

Almost surely, 2^77700023 is an apocalyptic number.

77700023 is a deficient number, since it is larger than the sum of its proper divisors (1).

77700023 is an equidigital number, since it uses as much as digits as its factorization.

77700023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2058, while the sum is 26.

The square root of 77700023 is about 8814.7616530454. The cubic root of 77700023 is about 426.7174297376.

The spelling of 77700023 in words is "seventy-seven million, seven hundred thousand, twenty-three".