171394668 has 72 divisors (see below), whose sum is σ = 461697600. Its totient is φ = 53454816.

The previous prime is 171394661. The next prime is 171394673. The reversal of 171394668 is 866493171.

It is a happy number.

171394668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×171394668² = 58752264437660448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (171394661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55263 + ... + 58281.

Almost surely, 2^171394668 is an apocalyptic number.

171394668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 171394668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230848800).

171394668 is an abundant number, since it is smaller than the sum of its proper divisors (290302932).

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

171394668 is a wasteful number, since it uses less digits than its factorization.

171394668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3131 (or 3126 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 171394668 is about 13091.7786415750. The cubic root of 171394668 is about 555.4766005899.

The spelling of 171394668 in words is "one hundred seventy-one million, three hundred ninety-four thousand, six hundred sixty-eight".