64843738 has 8 divisors (see below), whose sum is σ = 99335232. Its totient is φ = 31731996.

The previous prime is 64843711. The next prime is 64843741. The reversal of 64843738 is 83734846.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 64843694 and 64843703.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344820 + ... + 345007.

It is an arithmetic number, because the mean of its divisors is an integer number (12416904).

Almost surely, 2^64843738 is an apocalyptic number.

64843738 is a deficient number, since it is larger than the sum of its proper divisors (34491494).

64843738 is a wasteful number, since it uses less digits than its factorization.

64843738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689876.

The product of its digits is 387072, while the sum is 43.

The square root of 64843738 is about 8052.5609590987. The cubic root of 64843738 is about 401.7501190407.

The spelling of 64843738 in words is "sixty-four million, eight hundred forty-three thousand, seven hundred thirty-eight".