72566671 has 8 divisors (see below), whose sum is σ = 76816080. Its totient is φ = 68433792.

The previous prime is 72566609. The next prime is 72566707. The reversal of 72566671 is 17666527.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 72566671 - 2¹¹ = 72564623 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 (72566971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27850 + ... + 30343.

It is an arithmetic number, because the mean of its divisors is an integer number (9602010).

Almost surely, 2^72566671 is an apocalyptic number.

72566671 is a deficient number, since it is larger than the sum of its proper divisors (4249409).

72566671 is a wasteful number, since it uses less digits than its factorization.

72566671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58265.

The product of its digits is 105840, while the sum is 40.

The square root of 72566671 is about 8518.6073392310. The cubic root of 72566671 is about 417.1053241268.

It can be divided in two parts, 72566 and 671, that added together give a palindrome (73237).

The spelling of 72566671 in words is "seventy-two million, five hundred sixty-six thousand, six hundred seventy-one".