64838818 has 12 divisors (see below), whose sum is σ = 106904070. Its totient is φ = 29472080.

The previous prime is 64838801. The next prime is 64838821. The reversal of 64838818 is 81883846.

It can be written as a sum of positive squares in only one way, i.e., 38900169 + 25938649 = 6237^2 + 5093^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133723 + ... + 134206.

Almost surely, 2^64838818 is an apocalyptic number.

64838818 is a deficient number, since it is larger than the sum of its proper divisors (42065252).

64838818 is a wasteful number, since it uses less digits than its factorization.

64838818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267953 (or 267942 counting only the distinct ones).

The product of its digits is 294912, while the sum is 46.

The square root of 64838818 is about 8052.2554604285. The cubic root of 64838818 is about 401.7399578921.

It can be divided in two parts, 64838 and 818, that added together give a palindrome (65656).

The spelling of 64838818 in words is "sixty-four million, eight hundred thirty-eight thousand, eight hundred eighteen".