68172133 has 16 divisors (see below), whose sum is σ = 73382400. Its totient is φ = 63143280.

The previous prime is 68172103. The next prime is 68172149. The reversal of 68172133 is 33127186.

It is a cyclic number.

It is not a de Polignac number, because 68172133 - 2⁵ = 68172101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68172095 and 68172104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68172103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219048 + ... + 219358.

It is an arithmetic number, because the mean of its divisors is an integer number (4586400).

Almost surely, 2^68172133 is an apocalyptic number.

It is an amenable number.

68172133 is a deficient number, since it is larger than the sum of its proper divisors (5210267).

68172133 is a wasteful number, since it uses less digits than its factorization.

68172133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552.

The product of its digits is 6048, while the sum is 31.

The square root of 68172133 is about 8256.6417507362. The cubic root of 68172133 is about 408.5096256497.

The spelling of 68172133 in words is "sixty-eight million, one hundred seventy-two thousand, one hundred thirty-three".