68630173 has 4 divisors (see below), whose sum is σ = 72667260. Its totient is φ = 64593088.

The previous prime is 68630161. The next prime is 68630179. The reversal of 68630173 is 37103686.

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

It can be written as a sum of positive squares in 2 ways, for example, as 44796249 + 23833924 = 6693^2 + 4882^2 .

It is a cyclic number.

It is not a de Polignac number, because 68630173 - 2⁵ = 68630141 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 (68630179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2018518 + ... + 2018551.

It is an arithmetic number, because the mean of its divisors is an integer number (18166815).

Almost surely, 2^68630173 is an apocalyptic number.

It is an amenable number.

68630173 is a deficient number, since it is larger than the sum of its proper divisors (4037087).

68630173 is a wasteful number, since it uses less digits than its factorization.

68630173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4037086.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 68630173 is about 8284.3329846162. The cubic root of 68630173 is about 409.4224925030.

The spelling of 68630173 in words is "sixty-eight million, six hundred thirty thousand, one hundred seventy-three".