68169192 has 144 divisors (see below), whose sum is σ = 215295840. Its totient is φ = 17978688.

The previous prime is 68169187. The next prime is 68169193. The reversal of 68169192 is 29196186.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (68169193) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5243778 + ... + 5243790.

It is an arithmetic number, because the mean of its divisors is an integer number (1495110).

Almost surely, 2^68169192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68169192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107647920).

68169192 is an abundant number, since it is smaller than the sum of its proper divisors (147126648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68169192 is an equidigital number, since it uses as much as digits as its factorization.

68169192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 25 counting only the distinct ones).

The product of its digits is 46656, while the sum is 42.

The square root of 68169192 is about 8256.4636497716. The cubic root of 68169192 is about 408.5037510885.

Multiplying 68169192 by its sum of digits (42), we get a square (2863106064 = 53508²).

68169192 divided by its sum of digits (42) gives a square (1623076 = 1274²).

The spelling of 68169192 in words is "sixty-eight million, one hundred sixty-nine thousand, one hundred ninety-two".