77217023 has 8 divisors (see below), whose sum is σ = 84092400. Its totient is φ = 70475328.

The previous prime is 77216989. The next prime is 77217029. The reversal of 77217023 is 32071277.

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 77217023 - 2⁸ = 77216767 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 (77217029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32213 + ... + 34526.

It is an arithmetic number, because the mean of its divisors is an integer number (10511550).

Almost surely, 2^77217023 is an apocalyptic number.

77217023 is a deficient number, since it is larger than the sum of its proper divisors (6875377).

77217023 is a wasteful number, since it uses less digits than its factorization.

77217023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66841.

The product of its (nonzero) digits is 4116, while the sum is 29.

The square root of 77217023 is about 8787.3217193864. The cubic root of 77217023 is about 425.8314022743.

The spelling of 77217023 in words is "seventy-seven million, two hundred seventeen thousand, twenty-three".