72620171 has 8 divisors (see below), whose sum is σ = 78279264. Its totient is φ = 66971520.

The previous prime is 72620113. The next prime is 72620179. The reversal of 72620171 is 17102627.

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 72620171 - 2²⁶ = 5511307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72620171.

It is not an unprimeable number, because it can be changed into a prime (72620179) 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, 17795 + ... + 21491.

It is an arithmetic number, because the mean of its divisors is an integer number (9784908).

Almost surely, 2^72620171 is an apocalyptic number.

72620171 is a deficient number, since it is larger than the sum of its proper divisors (5659093).

72620171 is a wasteful number, since it uses less digits than its factorization.

72620171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5221.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 72620171 is about 8521.7469453158. The cubic root of 72620171 is about 417.2078030050.

Adding to 72620171 its reverse (17102627), we get a palindrome (89722798).

The spelling of 72620171 in words is "seventy-two million, six hundred twenty thousand, one hundred seventy-one".