72474623 has 4 divisors (see below), whose sum is σ = 78049608. Its totient is φ = 66899640.

The previous prime is 72474613. The next prime is 72474629. The reversal of 72474623 is 32647427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32647427 = 131 ⋅249217.

It is a cyclic number.

It is not a de Polignac number, because 72474623 - 2¹² = 72470527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72474629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2787473 + ... + 2787498.

It is an arithmetic number, because the mean of its divisors is an integer number (19512402).

Almost surely, 2^72474623 is an apocalyptic number.

72474623 is a deficient number, since it is larger than the sum of its proper divisors (5574985).

72474623 is a wasteful number, since it uses less digits than its factorization.

72474623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5574984.

The product of its digits is 56448, while the sum is 35.

The square root of 72474623 is about 8513.2028637875. The cubic root of 72474623 is about 416.9288888780.

The spelling of 72474623 in words is "seventy-two million, four hundred seventy-four thousand, six hundred twenty-three".