72609605 has 8 divisors (see below), whose sum is σ = 87588864. Its totient is φ = 57782800.

The previous prime is 72609553. The next prime is 72609613. The reversal of 72609605 is 50690627.

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

It is not a de Polignac number, because 72609605 - 2⁸ = 72609349 is a prime.

It is a Duffinian number.

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, 37061 + ... + 38970.

It is an arithmetic number, because the mean of its divisors is an integer number (10948608).

Almost surely, 2^72609605 is an apocalyptic number.

It is an amenable number.

72609605 is a deficient number, since it is larger than the sum of its proper divisors (14979259).

72609605 is a wasteful number, since it uses less digits than its factorization.

72609605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76227.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 72609605 is about 8521.1269794552. The cubic root of 72609605 is about 417.1875678950.

The spelling of 72609605 in words is "seventy-two million, six hundred nine thousand, six hundred five".