168634664 has 64 divisors (see below), whose sum is σ = 353894400. Its totient is φ = 74692800.

The previous prime is 168634657. The next prime is 168634667. The reversal of 168634664 is 466436861.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (168634667) 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, 882809 + ... + 882999.

It is an arithmetic number, because the mean of its divisors is an integer number (5529600).

Almost surely, 2^168634664 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 168634664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176947200).

168634664 is an abundant number, since it is smaller than the sum of its proper divisors (185259736).

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

168634664 is a wasteful number, since it uses less digits than its factorization.

168634664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 410 counting only the distinct ones).

The product of its digits is 497664, while the sum is 44.

The square root of 168634664 is about 12985.9410132651. The cubic root of 168634664 is about 552.4787993749.

The spelling of 168634664 in words is "one hundred sixty-eight million, six hundred thirty-four thousand, six hundred sixty-four".