12613998 has 16 divisors (see below), whose sum is σ = 25474176. Its totient is φ = 4163640.

The previous prime is 12613981. The next prime is 12613999. The reversal of 12613998 is 89931621.

12613998 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12613998² = 318225891088008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12613999) 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, 9588 + ... + 10823.

It is an arithmetic number, because the mean of its divisors is an integer number (1592136).

Almost surely, 2^12613998 is an apocalyptic number.

12613998 is an abundant number, since it is smaller than the sum of its proper divisors (12860178).

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

12613998 is a wasteful number, since it uses less digits than its factorization.

12613998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20519.

The product of its digits is 23328, while the sum is 39.

The square root of 12613998 is about 3551.6190674114. The cubic root of 12613998 is about 232.7828168964.

The spelling of 12613998 in words is "twelve million, six hundred thirteen thousand, nine hundred ninety-eight".