12633987 has 8 divisors (see below), whose sum is σ = 16865104. Its totient is φ = 8412768.

The previous prime is 12633979. The next prime is 12633997. The reversal of 12633987 is 78933621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12633987 - 2³ = 12633979 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (12633977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1353 + ... + 5205.

It is an arithmetic number, because the mean of its divisors is an integer number (2108138).

Almost surely, 2^12633987 is an apocalyptic number.

12633987 is a deficient number, since it is larger than the sum of its proper divisors (4231117).

12633987 is a wasteful number, since it uses less digits than its factorization.

12633987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4949.

The product of its digits is 54432, while the sum is 39.

The square root of 12633987 is about 3554.4320221380. The cubic root of 12633987 is about 232.9057131692.

The spelling of 12633987 in words is "twelve million, six hundred thirty-three thousand, nine hundred eighty-seven".