64791938 has 8 divisors (see below), whose sum is σ = 102303120. Its totient is φ = 30690900.

The previous prime is 64791899. The next prime is 64791949. The reversal of 64791938 is 83919746.

64791938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 64791892 and 64791901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 852488 + ... + 852563.

It is an arithmetic number, because the mean of its divisors is an integer number (12787890).

Almost surely, 2^64791938 is an apocalyptic number.

64791938 is a deficient number, since it is larger than the sum of its proper divisors (37511182).

64791938 is a wasteful number, since it uses less digits than its factorization.

64791938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705072.

The product of its digits is 326592, while the sum is 47.

The square root of 64791938 is about 8049.3439484221. The cubic root of 64791938 is about 401.6431120484.

The spelling of 64791938 in words is "sixty-four million, seven hundred ninety-one thousand, nine hundred thirty-eight".