72685047 has 16 divisors (see below), whose sum is σ = 103023360. Its totient is φ = 45424512.

The previous prime is 72685033. The next prime is 72685061. The reversal of 72685047 is 74058627.

It is an interprime number because it is at equal distance from previous prime (72685033) and next prime (72685061).

It is not a de Polignac number, because 72685047 - 2²³ = 64296439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72684996 and 72685014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72685027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10704 + ... + 16122.

It is an arithmetic number, because the mean of its divisors is an integer number (6438960).

Almost surely, 2^72685047 is an apocalyptic number.

72685047 is a deficient number, since it is larger than the sum of its proper divisors (30338313).

72685047 is a wasteful number, since it uses less digits than its factorization.

72685047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5702.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 72685047 is about 8525.5525920611. The cubic root of 72685047 is about 417.3320050319.

The spelling of 72685047 in words is "seventy-two million, six hundred eighty-five thousand, forty-seven".