72265807 has 4 divisors (see below), whose sum is σ = 72470880. Its totient is φ = 72060736.

The previous prime is 72265783. The next prime is 72265819. The reversal of 72265807 is 70856227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72265807 is a prime.

It is a super-3 number, since 3×72265807³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72262807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102007 + ... + 102712.

It is an arithmetic number, because the mean of its divisors is an integer number (18117720).

Almost surely, 2^72265807 is an apocalyptic number.

72265807 is a deficient number, since it is larger than the sum of its proper divisors (205073).

72265807 is a wasteful number, since it uses less digits than its factorization.

72265807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205072.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 72265807 is about 8500.9297726778. The cubic root of 72265807 is about 416.5280811286.

The spelling of 72265807 in words is "seventy-two million, two hundred sixty-five thousand, eight hundred seven".