145664168 has 32 divisors (see below), whose sum is σ = 298287360. Its totient is φ = 66279360.

The previous prime is 145664161. The next prime is 145664171. The reversal of 145664168 is 861466541.

It is not an unprimeable number, because it can be changed into a prime (145664161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2480 + ... + 17247.

It is an arithmetic number, because the mean of its divisors is an integer number (9321480).

Almost surely, 2^145664168 is an apocalyptic number.

It is an amenable number.

145664168 is an abundant number, since it is smaller than the sum of its proper divisors (152623192).

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

145664168 is a wasteful number, since it uses less digits than its factorization.

145664168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19817 (or 19813 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 145664168 is about 12069.1411459142. The cubic root of 145664168 is about 526.1596955196.

The spelling of 145664168 in words is "one hundred forty-five million, six hundred sixty-four thousand, one hundred sixty-eight".