64943846 has 36 divisors (see below), whose sum is σ = 110971476. Its totient is φ = 28468440.

The previous prime is 64943821. The next prime is 64943873. The reversal of 64943846 is 64834946.

It is a junction number, because it is equal to n+sod(n) for n = 64943797 and 64943806.

It is a congruent number.

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 17 ways as a sum of consecutive naturals, for example, 822035 + ... + 822113.

It is an arithmetic number, because the mean of its divisors is an integer number (3082541).

Almost surely, 2^64943846 is an apocalyptic number.

64943846 is a deficient number, since it is larger than the sum of its proper divisors (46027630).

64943846 is a wasteful number, since it uses less digits than its factorization.

64943846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 135 counting only the distinct ones).

The product of its digits is 497664, while the sum is 44.

The square root of 64943846 is about 8058.7744725858. The cubic root of 64943846 is about 401.9567579701.

Subtracting from 64943846 its reverse (64834946), we obtain a square (108900 = 330²).

The spelling of 64943846 in words is "sixty-four million, nine hundred forty-three thousand, eight hundred forty-six".