64903838 has 16 divisors (see below), whose sum is σ = 103109760. Its totient is φ = 30576216.

The previous prime is 64903837. The next prime is 64903843. The reversal of 64903838 is 83830946.

It is a junction number, because it is equal to n+sod(n) for n = 64903795 and 64903804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64903837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7448 + ... + 13611.

It is an arithmetic number, because the mean of its divisors is an integer number (6444360).

Almost surely, 2^64903838 is an apocalyptic number.

64903838 is a deficient number, since it is larger than the sum of its proper divisors (38205922).

64903838 is a wasteful number, since it uses less digits than its factorization.

64903838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21151.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 64903838 is about 8056.2918268891. The cubic root of 64903838 is about 401.8742005487.

The spelling of 64903838 in words is "sixty-four million, nine hundred three thousand, eight hundred thirty-eight".