77345023 has 4 divisors (see below), whose sum is σ = 88394320. Its totient is φ = 66295728.

The previous prime is 77345017. The next prime is 77345039. The reversal of 77345023 is 32054377.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77345023 - 2⁹ = 77344511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77345063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5524638 + ... + 5524651.

It is an arithmetic number, because the mean of its divisors is an integer number (22098580).

Almost surely, 2^77345023 is an apocalyptic number.

77345023 is a deficient number, since it is larger than the sum of its proper divisors (11049297).

77345023 is a wasteful number, since it uses less digits than its factorization.

77345023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11049296.

The product of its (nonzero) digits is 17640, while the sum is 31.

The square root of 77345023 is about 8794.6019239076. The cubic root of 77345023 is about 426.0665677308.

It can be divided in two parts, 773 and 45023, that added together give a square (45796 = 214²).

The spelling of 77345023 in words is "seventy-seven million, three hundred forty-five thousand, twenty-three".