72479863 has 4 divisors (see below), whose sum is σ = 73561720. Its totient is φ = 71398008.

The previous prime is 72479861. The next prime is 72479867. The reversal of 72479863 is 36897427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36897427 = 7 ⋅5271061.

It is a cyclic number.

It is not a de Polignac number, because 72479863 - 2¹ = 72479861 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 (72479861) 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, 540828 + ... + 540961.

It is an arithmetic number, because the mean of its divisors is an integer number (18390430).

Almost surely, 2^72479863 is an apocalyptic number.

72479863 is a deficient number, since it is larger than the sum of its proper divisors (1081857).

72479863 is a wasteful number, since it uses less digits than its factorization.

72479863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081856.

The product of its digits is 508032, while the sum is 46.

The square root of 72479863 is about 8513.5106154864. The cubic root of 72479863 is about 416.9389367846.

The spelling of 72479863 in words is "seventy-two million, four hundred seventy-nine thousand, eight hundred sixty-three".