670170168 has 72 divisors (see below), whose sum is σ = 1831466520. Its totient is φ = 221384640.

The previous prime is 670170157. The next prime is 670170169. The reversal of 670170168 is 861071076.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670170169) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2154733 + ... + 2155043.

It is an arithmetic number, because the mean of its divisors is an integer number (25437035).

Almost surely, 2^670170168 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 670170168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (915733260).

670170168 is an abundant number, since it is smaller than the sum of its proper divisors (1161296352).

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

670170168 is a wasteful number, since it uses less digits than its factorization.

670170168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669 (or 489 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 670170168 is about 25887.6450840937. The cubic root of 670170168 is about 875.1080870014.

The spelling of 670170168 in words is "six hundred seventy million, one hundred seventy thousand, one hundred sixty-eight".