12738601 has 4 divisors (see below), whose sum is σ = 12747204. Its totient is φ = 12730000.

The previous prime is 12738581. The next prime is 12738617. The reversal of 12738601 is 10683721.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2822400 + 9916201 = 1680^2 + 3149^2 .

It is a cyclic number.

It is not a de Polignac number, because 12738601 - 2¹³ = 12730409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12738601.

It is not an unprimeable number, because it can be changed into a prime (12738641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1450 + ... + 5251.

It is an arithmetic number, because the mean of its divisors is an integer number (3186801).

Almost surely, 2^12738601 is an apocalyptic number.

It is an amenable number.

12738601 is a deficient number, since it is larger than the sum of its proper divisors (8603).

12738601 is an equidigital number, since it uses as much as digits as its factorization.

12738601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8602.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 12738601 is about 3569.1176780824. The cubic root of 12738601 is about 233.5467949077.

The spelling of 12738601 in words is "twelve million, seven hundred thirty-eight thousand, six hundred one".