1329601 has 16 divisors (see below), whose sum is σ = 1724800. Its totient is φ = 995328.

The previous prime is 1329599. The next prime is 1329619. The reversal of 1329601 is 1069231.

It is a 5-Lehmer number, since φ(1329601) divides (1329601-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 1329601 - 2¹ = 1329599 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1329631) 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, 1345 + ... + 2113.

It is an arithmetic number, because the mean of its divisors is an integer number (107800).

2^1329601 is an apocalyptic number.

It is an amenable number.

1329601 is a deficient number, since it is larger than the sum of its proper divisors (395199).

1329601 is a wasteful number, since it uses less digits than its factorization.

1329601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1329601 is about 1153.0832580521. The cubic root of 1329601 is about 109.9614465442.

The spelling of 1329601 in words is "one million, three hundred twenty-nine thousand, six hundred one".