72677823 has 4 divisors (see below), whose sum is σ = 96903768. Its totient is φ = 48451880.

The previous prime is 72677807. The next prime is 72677827. The reversal of 72677823 is 32877627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32877627 = 3 ⋅10959209.

It is a cyclic number.

It is not a de Polignac number, because 72677823 - 2⁴ = 72677807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72677827) 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 3 ways as a sum of consecutive naturals, for example, 12112968 + ... + 12112973.

It is an arithmetic number, because the mean of its divisors is an integer number (24225942).

Almost surely, 2^72677823 is an apocalyptic number.

72677823 is a deficient number, since it is larger than the sum of its proper divisors (24225945).

72677823 is a wasteful number, since it uses less digits than its factorization.

72677823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24225944.

The product of its digits is 197568, while the sum is 42.

The square root of 72677823 is about 8525.1289139813. The cubic root of 72677823 is about 417.3181786838.

The spelling of 72677823 in words is "seventy-two million, six hundred seventy-seven thousand, eight hundred twenty-three".