64426 has 4 divisors (see below), whose sum is σ = 96642. Its totient is φ = 32212.

The previous prime is 64403. The next prime is 64433. The reversal of 64426 is 62446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62446 = 2 ⋅31223.

It can be written as a sum of positive squares in only one way, i.e., 40401 + 24025 = 201^2 + 155^2 .

It is a plaindrome in base 7 and base 11.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 64397 and 64406.

It is an unprimeable number.

64426 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 16105 + ... + 16108.

2⁶⁴⁴²⁶ is an apocalyptic number.

64426 is a deficient number, since it is larger than the sum of its proper divisors (32216).

64426 is a wasteful number, since it uses less digits than its factorization.

64426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32215.

The product of its digits is 1152, while the sum is 22.

The square root of 64426 is about 253.8227728160. The cubic root of 64426 is about 40.0885538109.

The spelling of 64426 in words is "sixty-four thousand, four hundred twenty-six".