77256823 has 8 divisors (see below), whose sum is σ = 93487392. Its totient is φ = 62324736.

The previous prime is 77256821. The next prime is 77256827. The reversal of 77256823 is 32865277.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77256823 - 2¹ = 77256821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77256821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324490 + ... + 324727.

It is an arithmetic number, because the mean of its divisors is an integer number (11685924).

Almost surely, 2^77256823 is an apocalyptic number.

77256823 is a deficient number, since it is larger than the sum of its proper divisors (16230569).

77256823 is a wasteful number, since it uses less digits than its factorization.

77256823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649241.

The product of its digits is 141120, while the sum is 40.

The square root of 77256823 is about 8789.5860539618. The cubic root of 77256823 is about 425.9045518560.

The spelling of 77256823 in words is "seventy-seven million, two hundred fifty-six thousand, eight hundred twenty-three".