72665260 has 12 divisors (see below), whose sum is σ = 152597088. Its totient is φ = 29066096.

The previous prime is 72665251. The next prime is 72665261. The reversal of 72665260 is 6256627.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72665261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1816612 + ... + 1816651.

It is an arithmetic number, because the mean of its divisors is an integer number (12716424).

Almost surely, 2^72665260 is an apocalyptic number.

It is an amenable number.

72665260 is an abundant number, since it is smaller than the sum of its proper divisors (79931828).

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

72665260 is a wasteful number, since it uses less digits than its factorization.

72665260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3633272 (or 3633270 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 72665260 is about 8524.3920604346. The cubic root of 72665260 is about 417.2941315941.

The spelling of 72665260 in words is "seventy-two million, six hundred sixty-five thousand, two hundred sixty".