64381910 has 8 divisors (see below), whose sum is σ = 115887456. Its totient is φ = 25752760.

The previous prime is 64381871. The next prime is 64381913. The reversal of 64381910 is 1918346.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64381913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3219086 + ... + 3219105.

It is an arithmetic number, because the mean of its divisors is an integer number (14485932).

Almost surely, 2^64381910 is an apocalyptic number.

64381910 is a deficient number, since it is larger than the sum of its proper divisors (51505546).

64381910 is a wasteful number, since it uses less digits than its factorization.

64381910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6438198.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 64381910 is about 8023.8338716601. The cubic root of 64381910 is about 400.7940684285.

The spelling of 64381910 in words is "sixty-four million, three hundred eighty-one thousand, nine hundred ten".