64388 has 6 divisors (see below), whose sum is σ = 112686. Its totient is φ = 32192.

The previous prime is 64381. The next prime is 64399. The reversal of 64388 is 88346.

It can be written as a sum of positive squares in only one way, i.e., 56644 + 7744 = 238^2 + 88^2 .

It is a plaindrome in base 13.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 64388.

It is not an unprimeable number, because it can be changed into a prime (64381) by changing a digit.

64388 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8045 + ... + 8052.

It is an arithmetic number, because the mean of its divisors is an integer number (18781).

2⁶⁴³⁸⁸ is an apocalyptic number.

It is an amenable number.

64388 is a deficient number, since it is larger than the sum of its proper divisors (48298).

64388 is a wasteful number, since it uses less digits than its factorization.

64388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16101 (or 16099 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 64388 is about 253.7479063953. The cubic root of 64388 is about 40.0806705306.

It can be divided in two parts, 6438 and 8, that added together give a palindrome (6446).

The spelling of 64388 in words is "sixty-four thousand, three hundred eighty-eight".