77859023 has 6 divisors (see below), whose sum is σ = 85580712. Its totient is φ = 70780820.

The previous prime is 77859013. The next prime is 77859037. The reversal of 77859023 is 32095877.

It is not a de Polignac number, because 77859023 - 2²⁴ = 61081807 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 (77859013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 321611 + ... + 321852.

It is an arithmetic number, because the mean of its divisors is an integer number (14263452).

Almost surely, 2^77859023 is an apocalyptic number.

77859023 is a deficient number, since it is larger than the sum of its proper divisors (7721689).

77859023 is a wasteful number, since it uses less digits than its factorization.

77859023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643485 (or 643474 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 77859023 is about 8823.7760057699. The cubic root of 77859023 is about 427.0082998531.

The spelling of 77859023 in words is "seventy-seven million, eight hundred fifty-nine thousand, twenty-three".