12635560 has 32 divisors (see below), whose sum is σ = 32492160. Its totient is φ = 4332096.

The previous prime is 12635531. The next prime is 12635563. The reversal of 12635560 is 6553621.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (12635563) 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, 22284 + ... + 22843.

It is an arithmetic number, because the mean of its divisors is an integer number (1015380).

Almost surely, 2^12635560 is an apocalyptic number.

12635560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12635560 is an abundant number, since it is smaller than the sum of its proper divisors (19856600).

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

12635560 is a wasteful number, since it uses less digits than its factorization.

12635560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45145 (or 45141 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 12635560 is about 3554.6532882969. The cubic root of 12635560 is about 232.9153787768.

It can be divided in two parts, 12635 and 560, that multiplied together give a square (7075600 = 2660²).

The spelling of 12635560 in words is "twelve million, six hundred thirty-five thousand, five hundred sixty".