77113823 has 2 divisors, whose sum is σ = 77113824. Its totient is φ = 77113822.

The previous prime is 77113811. The next prime is 77113831. The reversal of 77113823 is 32831177.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77113823 - 2⁸ = 77113567 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77113823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77113843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38556911 + 38556912.

It is an arithmetic number, because the mean of its divisors is an integer number (38556912).

Almost surely, 2^77113823 is an apocalyptic number.

77113823 is a deficient number, since it is larger than the sum of its proper divisors (1).

77113823 is an equidigital number, since it uses as much as digits as its factorization.

77113823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 32.

The square root of 77113823 is about 8781.4476596971. The cubic root of 77113823 is about 425.6416108211.

The spelling of 77113823 in words is "seventy-seven million, one hundred thirteen thousand, eight hundred twenty-three".