64009842 has 32 divisors (see below), whose sum is σ = 138772032. Its totient is φ = 19566144.

The previous prime is 64009793. The next prime is 64009859. The reversal of 64009842 is 24890046.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9633 + ... + 14859.

It is an arithmetic number, because the mean of its divisors is an integer number (4336626).

Almost surely, 2^64009842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64009842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69386016).

64009842 is an abundant number, since it is smaller than the sum of its proper divisors (74762190).

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

64009842 is a wasteful number, since it uses less digits than its factorization.

64009842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5402.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 64009842 is about 8000.6151013531. The cubic root of 64009842 is about 400.0205031157.

Adding to 64009842 its reverse (24890046), we get a palindrome (88899888).

The spelling of 64009842 in words is "sixty-four million, nine thousand, eight hundred forty-two".