126636 has 24 divisors (see below), whose sum is σ = 302064. Its totient is φ = 41280.

The previous prime is 126631. The next prime is 126641. The reversal of 126636 is 636621.

It is an interprime number because it is at equal distance from previous prime (126631) and next prime (126641).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (126631) 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 7 ways as a sum of consecutive naturals, for example, 646 + ... + 818.

It is an arithmetic number, because the mean of its divisors is an integer number (12586).

2¹²⁶⁶³⁶ is an apocalyptic number.

It is an amenable number.

126636 is an abundant number, since it is smaller than the sum of its proper divisors (175428).

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

126636 is a wasteful number, since it uses less digits than its factorization.

126636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241 (or 239 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

The square root of 126636 is about 355.8595228457. The cubic root of 126636 is about 50.2171885500.

The spelling of 126636 in words is "one hundred twenty-six thousand, six hundred thirty-six".