72543606 has 16 divisors (see below), whose sum is σ = 149008944. Its totient is φ = 23527584.

The previous prime is 72543599. The next prime is 72543617. The reversal of 72543606 is 60634527.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163165 + ... + 163608.

It is an arithmetic number, because the mean of its divisors is an integer number (9313059).

Almost surely, 2^72543606 is an apocalyptic number.

72543606 is an abundant number, since it is smaller than the sum of its proper divisors (76465338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72543606 is a wasteful number, since it uses less digits than its factorization.

72543606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326815.

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 72543606 is about 8517.2534305373. The cubic root of 72543606 is about 417.0611277410.

The spelling of 72543606 in words is "seventy-two million, five hundred forty-three thousand, six hundred six".