636476 has 6 divisors (see below), whose sum is σ = 1113840. Its totient is φ = 318236.

The previous prime is 636473. The next prime is 636499. The reversal of 636476 is 674636.

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 636476.

It is not an unprimeable number, because it can be changed into a prime (636473) 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, 79556 + ... + 79563.

It is an arithmetic number, because the mean of its divisors is an integer number (185640).

2⁶³⁶⁴⁷⁶ is an apocalyptic number.

It is an amenable number.

636476 is a deficient number, since it is larger than the sum of its proper divisors (477364).

636476 is a wasteful number, since it uses less digits than its factorization.

636476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159123 (or 159121 counting only the distinct ones).

The product of its digits is 18144, while the sum is 32.

The square root of 636476 is about 797.7944597451. The cubic root of 636476 is about 86.0189249860.

The spelling of 636476 in words is "six hundred thirty-six thousand, four hundred seventy-six".