172680013 has 8 divisors (see below), whose sum is σ = 194455296. Its totient is φ = 151917600.

The previous prime is 172679993. The next prime is 172680019. The reversal of 172680013 is 310086271.

172680013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172680013 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 (172680019) 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, 252856 + ... + 253537.

It is an arithmetic number, because the mean of its divisors is an integer number (24306912).

Almost surely, 2^172680013 is an apocalyptic number.

It is an amenable number.

172680013 is a deficient number, since it is larger than the sum of its proper divisors (21775283).

172680013 is a wasteful number, since it uses less digits than its factorization.

172680013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506435.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 172680013 is about 13140.7767274237. The cubic root of 172680013 is about 556.8617111275.

The spelling of 172680013 in words is "one hundred seventy-two million, six hundred eighty thousand, thirteen".