64043634 has 8 divisors (see below), whose sum is σ = 128087280. Its totient is φ = 21347876.

The previous prime is 64043621. The next prime is 64043659. The reversal of 64043634 is 43634046.

It is a sphenic number, since it is the product of 3 distinct primes.

64043634 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5336964 + ... + 5336975.

It is an arithmetic number, because the mean of its divisors is an integer number (16010910).

Almost surely, 2^64043634 is an apocalyptic number.

64043634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64043634 is a wasteful number, since it uses less digits than its factorization.

64043634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10673944.

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 64043634 is about 8002.7266603327. The cubic root of 64043634 is about 400.0908835156.

The spelling of 64043634 in words is "sixty-four million, forty-three thousand, six hundred thirty-four".