72684479 has 8 divisors (see below), whose sum is σ = 83253408. Its totient is φ = 62161920.

The previous prime is 72684473. The next prime is 72684509. The reversal of 72684479 is 97448627.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72684479 - 2⁴ = 72684463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72684473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8162 + ... + 14559.

It is an arithmetic number, because the mean of its divisors is an integer number (10406676).

Almost surely, 2^72684479 is an apocalyptic number.

72684479 is a deficient number, since it is larger than the sum of its proper divisors (10568929).

72684479 is a wasteful number, since it uses less digits than its factorization.

72684479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23185.

The product of its digits is 677376, while the sum is 47.

The square root of 72684479 is about 8525.5192803723. The cubic root of 72684479 is about 417.3309179436.

The spelling of 72684479 in words is "seventy-two million, six hundred eighty-four thousand, four hundred seventy-nine".