12645700 has 18 divisors (see below), whose sum is σ = 27441386. Its totient is φ = 5058240.

The previous prime is 12645667. The next prime is 12645707. The reversal of 12645700 is 754621.

It can be written as a sum of positive squares in 3 ways, for example, as 198916 + 12446784 = 446^2 + 3528^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (12645707) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63129 + ... + 63328.

Almost surely, 2^12645700 is an apocalyptic number.

12645700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12645700 is an abundant number, since it is smaller than the sum of its proper divisors (14795686).

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

12645700 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 8 representation: 12645700 = (60172504)₈.

12645700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126471 (or 126464 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 12645700 is about 3556.0793017029. The cubic root of 12645700 is about 232.9776667549.

The spelling of 12645700 in words is "twelve million, six hundred forty-five thousand, seven hundred".