12599680 has 32 divisors (see below), whose sum is σ = 30122640. Its totient is φ = 5039616.

The previous prime is 12599677. The next prime is 12599683. The reversal of 12599680 is 8699521.

It is an interprime number because it is at equal distance from previous prime (12599677) and next prime (12599683).

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×12599680² = 317503872204800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12599683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9204 + ... + 10483.

Almost surely, 2^12599680 is an apocalyptic number.

12599680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12599680 is an abundant number, since it is smaller than the sum of its proper divisors (17522960).

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

12599680 is an equidigital number, since it uses as much as digits as its factorization.

12599680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19706 (or 19694 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 12599680 is about 3549.6027946800. The cubic root of 12599680 is about 232.6947072094.

The spelling of 12599680 in words is "twelve million, five hundred ninety-nine thousand, six hundred eighty".