64406 has 4 divisors (see below), whose sum is σ = 96612. Its totient is φ = 32202.

The previous prime is 64403. The next prime is 64433. The reversal of 64406 is 60446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60446 = 2 ⋅30223.

It is a Curzon number.

It is a nialpdrome in base 11 and base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 64406.

It is not an unprimeable number, because it can be changed into a prime (64403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16100 + ... + 16103.

It is an arithmetic number, because the mean of its divisors is an integer number (24153).

2⁶⁴⁴⁰⁶ is an apocalyptic number.

64406 is a deficient number, since it is larger than the sum of its proper divisors (32206).

64406 is a wasteful number, since it uses less digits than its factorization.

64406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32205.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 64406 is about 253.7833721897. The cubic root of 64406 is about 40.0844051025.

It can be divided in two parts, 6440 and 6, that added together give a palindrome (6446).

The spelling of 64406 in words is "sixty-four thousand, four hundred six".