12694401 has 20 divisors (see below), whose sum is σ = 19327572. Its totient is φ = 8300448.

The previous prime is 12694397. The next prime is 12694411. The reversal of 12694401 is 10449621.

It can be written as a sum of positive squares in 2 ways, for example, as 5645376 + 7049025 = 2376^2 + 2655^2 .

It is not a de Polignac number, because 12694401 - 2² = 12694397 is a prime.

It is a super-2 number, since 2×12694401² = 322295633497602, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (12694411) 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, 2815 + ... + 5771.

Almost surely, 2^12694401 is an apocalyptic number.

It is an amenable number.

12694401 is a deficient number, since it is larger than the sum of its proper divisors (6633171).

12694401 is an equidigital number, since it uses as much as digits as its factorization.

12694401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3022 (or 3013 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 12694401 is about 3562.9202909973. The cubic root of 12694401 is about 233.2763640964.

The spelling of 12694401 in words is "twelve million, six hundred ninety-four thousand, four hundred one".