64190336 has 64 divisors (see below), whose sum is σ = 150927360. Its totient is φ = 26611200.

The previous prime is 64190333. The next prime is 64190359. The reversal of 64190336 is 63309146.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64190333) 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, 26621 + ... + 28931.

It is an arithmetic number, because the mean of its divisors is an integer number (2358240).

Almost surely, 2^64190336 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 64190336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75463680).

64190336 is an abundant number, since it is smaller than the sum of its proper divisors (86737024).

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

64190336 is a wasteful number, since it uses less digits than its factorization.

64190336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363 (or 2351 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 64190336 is about 8011.8871684516. The cubic root of 64190336 is about 400.3961408848.

The spelling of 64190336 in words is "sixty-four million, one hundred ninety thousand, three hundred thirty-six".