12641601 has 8 divisors (see below), whose sum is σ = 19263424. Its totient is φ = 7223760.

The previous prime is 12641567. The next prime is 12641609. The reversal of 12641601 is 10614621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12641601 - 2⁶ = 12641537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 601981 = 12641601 / (1 + 2 + 6 + 4 + 1 + 6 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12641609) 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, 300970 + ... + 301011.

It is an arithmetic number, because the mean of its divisors is an integer number (2407928).

Almost surely, 2^12641601 is an apocalyptic number.

It is an amenable number.

12641601 is a deficient number, since it is larger than the sum of its proper divisors (6621823).

12641601 is an equidigital number, since it uses as much as digits as its factorization.

12641601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601991.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 12641601 is about 3555.5029180131. The cubic root of 12641601 is about 232.9524914342.

The spelling of 12641601 in words is "twelve million, six hundred forty-one thousand, six hundred one".