64144008 has 64 divisors (see below), whose sum is σ = 182548800. Its totient is φ = 20856960.

The previous prime is 64144007. The next prime is 64144013. The reversal of 64144008 is 80044146.

It is a super-2 number, since 2×64144008² = 8228907524608128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (64144007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5235 + ... + 12477.

It is an arithmetic number, because the mean of its divisors is an integer number (2852325).

Almost surely, 2^64144008 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 64144008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91274400).

64144008 is an abundant number, since it is smaller than the sum of its proper divisors (118404792).

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

64144008 is a wasteful number, since it uses less digits than its factorization.

64144008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7299 (or 7289 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 64144008 is about 8008.9954426257. The cubic root of 64144008 is about 400.2997919225.

The spelling of 64144008 in words is "sixty-four million, one hundred forty-four thousand, eight".