12791601 has 20 divisors (see below), whose sum is σ = 19360000. Its totient is φ = 8415576.

The previous prime is 12791593. The next prime is 12791621. The reversal of 12791601 is 10619721.

12791601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12791601 - 2³ = 12791593 is a prime.

It is a super-2 number, since 2×12791601² = 327250112286402, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12791621) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5400 + ... + 7398.

It is an arithmetic number, because the mean of its divisors is an integer number (968000).

Almost surely, 2^12791601 is an apocalyptic number.

It is an amenable number.

12791601 is a deficient number, since it is larger than the sum of its proper divisors (6568399).

12791601 is an equidigital number, since it uses as much as digits as its factorization.

12791601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090 (or 2081 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 12791601 is about 3576.5347754496. The cubic root of 12791601 is about 233.8702436434.

It can be divided in two parts, 1279160 and 1, that added together give a square (1279161 = 1131²).

The spelling of 12791601 in words is "twelve million, seven hundred ninety-one thousand, six hundred one".