126644 has 12 divisors (see below), whose sum is σ = 253344. Its totient is φ = 54264.

The previous prime is 126641. The next prime is 126653. The reversal of 126644 is 446621.

It is a happy number.

126644 is an admirable number.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126641) 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 in 3 ways as a sum of consecutive naturals, for example, 2234 + ... + 2289.

It is an arithmetic number, because the mean of its divisors is an integer number (21112).

2¹²⁶⁶⁴⁴ is an apocalyptic number.

126644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

126644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126644 is a wasteful number, since it uses less digits than its factorization.

126644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4534 (or 4532 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 126644 is about 355.8707630587. The cubic root of 126644 is about 50.2182459877.

Subtracting from 126644 its sum of digits (23), we obtain a palindrome (126621).

The spelling of 126644 in words is "one hundred twenty-six thousand, six hundred forty-four".