72644266 has 8 divisors (see below), whose sum is σ = 109184544. Its totient is φ = 36249420.

The previous prime is 72644233. The next prime is 72644269. The reversal of 72644266 is 66244627.

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

It is not an unprimeable number, because it can be changed into a prime (72644269) 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, 35100 + ... + 37111.

It is an arithmetic number, because the mean of its divisors is an integer number (13648068).

Almost surely, 2^72644266 is an apocalyptic number.

72644266 is a deficient number, since it is larger than the sum of its proper divisors (36540278).

72644266 is a wasteful number, since it uses less digits than its factorization.

72644266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72716.

The product of its digits is 96768, while the sum is 37.

The square root of 72644266 is about 8523.1605640161. The cubic root of 72644266 is about 417.2539403719.

The spelling of 72644266 in words is "seventy-two million, six hundred forty-four thousand, two hundred sixty-six".