636148 has 12 divisors (see below), whose sum is σ = 1118880. Its totient is φ = 316472.

The previous prime is 636137. The next prime is 636149. The reversal of 636148 is 841636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636149) by changing a digit.

636148 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 in 3 ways as a sum of consecutive naturals, for example, 1215 + ... + 1657.

It is an arithmetic number, because the mean of its divisors is an integer number (93240).

2⁶³⁶¹⁴⁸ is an apocalyptic number.

It is an amenable number.

636148 is a deficient number, since it is larger than the sum of its proper divisors (482732).

636148 is a wasteful number, since it uses less digits than its factorization.

636148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806 (or 804 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 636148 is about 797.5888665221. The cubic root of 636148 is about 86.0041461855.

It can be divided in two parts, 636 and 148, that added together give a square (784 = 28²).

The spelling of 636148 in words is "six hundred thirty-six thousand, one hundred forty-eight".