77736423 has 16 divisors (see below), whose sum is σ = 104832000. Its totient is φ = 51236640.

The previous prime is 77736383. The next prime is 77736487. The reversal of 77736423 is 32463777.

It is not a de Polignac number, because 77736423 - 2¹⁸ = 77474279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77736523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129478 + ... + 130076.

It is an arithmetic number, because the mean of its divisors is an integer number (6552000).

Almost surely, 2^77736423 is an apocalyptic number.

77736423 is a deficient number, since it is larger than the sum of its proper divisors (27095577).

77736423 is a wasteful number, since it uses less digits than its factorization.

77736423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022.

The product of its digits is 148176, while the sum is 39.

The square root of 77736423 is about 8816.8261296228. The cubic root of 77736423 is about 426.7840538688.

It can be divided in two parts, 7773 and 6423, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 77736423 in words is "seventy-seven million, seven hundred thirty-six thousand, four hundred twenty-three".