72667159 has 4 divisors (see below), whose sum is σ = 72714760. Its totient is φ = 72619560.

The previous prime is 72667157. The next prime is 72667169. The reversal of 72667159 is 95176627.

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

It is a cyclic number.

It is not a de Polignac number, because 72667159 - 2¹ = 72667157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72667157) 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, 21432 + ... + 24589.

It is an arithmetic number, because the mean of its divisors is an integer number (18178690).

Almost surely, 2^72667159 is an apocalyptic number.

72667159 is a deficient number, since it is larger than the sum of its proper divisors (47601).

72667159 is a wasteful number, since it uses less digits than its factorization.

72667159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47600.

The product of its digits is 158760, while the sum is 43.

The square root of 72667159 is about 8524.5034459492. The cubic root of 72667159 is about 417.2977666858.

The spelling of 72667159 in words is "seventy-two million, six hundred sixty-seven thousand, one hundred fifty-nine".