68428163 has 4 divisors (see below), whose sum is σ = 68445288. Its totient is φ = 68411040.

The previous prime is 68428123. The next prime is 68428169. The reversal of 68428163 is 36182486.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36182486 = 2 ⋅18091243.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68428163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68428169) 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, 968 + ... + 11738.

It is an arithmetic number, because the mean of its divisors is an integer number (17111322).

Almost surely, 2^68428163 is an apocalyptic number.

68428163 is a deficient number, since it is larger than the sum of its proper divisors (17125).

68428163 is a wasteful number, since it uses less digits than its factorization.

68428163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17124.

The product of its digits is 55296, while the sum is 38.

The square root of 68428163 is about 8272.1317083325. The cubic root of 68428163 is about 409.0203918153.

The spelling of 68428163 in words is "sixty-eight million, four hundred twenty-eight thousand, one hundred sixty-three".