12636634 has 16 divisors (see below), whose sum is σ = 20642400. Its totient is φ = 5778864.

The previous prime is 12636607. The next prime is 12636641. The reversal of 12636634 is 43663621.

12636634 = T₉₁₉ + T₉₂₀ + ... + T₉₄₇.

It is a junction number, because it is equal to n+sod(n) for n = 12636596 and 12636605.

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 4632 + ... + 6835.

It is an arithmetic number, because the mean of its divisors is an integer number (1290150).

Almost surely, 2^12636634 is an apocalyptic number.

12636634 is a deficient number, since it is larger than the sum of its proper divisors (8005766).

12636634 is a wasteful number, since it uses less digits than its factorization.

12636634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11517.

The product of its digits is 15552, while the sum is 31.

The square root of 12636634 is about 3554.8043546727. The cubic root of 12636634 is about 232.9219777200.

The spelling of 12636634 in words is "twelve million, six hundred thirty-six thousand, six hundred thirty-four".