72679823 has 2 divisors, whose sum is σ = 72679824. Its totient is φ = 72679822.

The previous prime is 72679819. The next prime is 72679837. The reversal of 72679823 is 32897627.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72679823 - 2² = 72679819 is a prime.

It is a super-2 number, since 2×72679823² = 10564713342622658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72679843) 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 as a sum of consecutive naturals, namely, 36339911 + 36339912.

It is an arithmetic number, because the mean of its divisors is an integer number (36339912).

Almost surely, 2^72679823 is an apocalyptic number.

72679823 is a deficient number, since it is larger than the sum of its proper divisors (1).

72679823 is an equidigital number, since it uses as much as digits as its factorization.

72679823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 44.

The square root of 72679823 is about 8525.2462134533. The cubic root of 72679823 is about 417.3220066682.

The spelling of 72679823 in words is "seventy-two million, six hundred seventy-nine thousand, eight hundred twenty-three".