64986168 has 64 divisors (see below), whose sum is σ = 180633600. Its totient is φ = 19347840.

The previous prime is 64986149. The next prime is 64986169. The reversal of 64986168 is 86168946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64986169) 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, 6313 + ... + 13031.

It is an arithmetic number, because the mean of its divisors is an integer number (2822400).

Almost surely, 2^64986168 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 64986168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90316800).

64986168 is an abundant number, since it is smaller than the sum of its proper divisors (115647432).

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

64986168 is a wasteful number, since it uses less digits than its factorization.

64986168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6772 (or 6768 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 64986168 is about 8061.3998784330. The cubic root of 64986168 is about 402.0440534876.

The spelling of 64986168 in words is "sixty-four million, nine hundred eighty-six thousand, one hundred sixty-eight".