12978601 has 16 divisors (see below), whose sum is σ = 14139648. Its totient is φ = 11880000.

The previous prime is 12978593. The next prime is 12978611. The reversal of 12978601 is 10687921.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12978601 - 2³ = 12978593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12978611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85876 + ... + 86026.

It is an arithmetic number, because the mean of its divisors is an integer number (883728).

Almost surely, 2^12978601 is an apocalyptic number.

It is an amenable number.

12978601 is a deficient number, since it is larger than the sum of its proper divisors (1161047).

12978601 is a wasteful number, since it uses less digits than its factorization.

12978601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 12978601 is about 3602.5825458968. The cubic root of 12978601 is about 235.0043819916.

The spelling of 12978601 in words is "twelve million, nine hundred seventy-eight thousand, six hundred one".