72136265 has 8 divisors (see below), whose sum is σ = 86616648. Its totient is φ = 57673600.

The previous prime is 72136249. The next prime is 72136271. The reversal of 72136265 is 56263127.

It can be written as a sum of positive squares in 4 ways, for example, as 22201 + 72114064 = 149^2 + 8492^2 .

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

It is not a de Polignac number, because 72136265 - 2⁴ = 72136249 is a prime.

It is a Duffinian 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, 7415 + ... + 14115.

It is an arithmetic number, because the mean of its divisors is an integer number (10827081).

Almost surely, 2^72136265 is an apocalyptic number.

It is an amenable number.

72136265 is a deficient number, since it is larger than the sum of its proper divisors (14480383).

72136265 is a wasteful number, since it uses less digits than its factorization.

72136265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8859.

The product of its digits is 15120, while the sum is 32.

The square root of 72136265 is about 8493.3070708647. The cubic root of 72136265 is about 416.2790460903.

The spelling of 72136265 in words is "seventy-two million, one hundred thirty-six thousand, two hundred sixty-five".