1301663 has 8 divisors (see below), whose sum is σ = 1440336. Its totient is φ = 1166400.

The previous prime is 1301621. The next prime is 1301669. The reversal of 1301663 is 3661031.

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

It is a cyclic number.

It is not a de Polignac number, because 1301663 - 2¹⁰ = 1300639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301669) 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, 8 + ... + 1613.

It is an arithmetic number, because the mean of its divisors is an integer number (180042).

2^1301663 is an apocalyptic number.

1301663 is a deficient number, since it is larger than the sum of its proper divisors (138673).

1301663 is a wasteful number, since it uses less digits than its factorization.

1301663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 1301663 is about 1140.9044657639. The cubic root of 1301663 is about 109.1858065878.

Adding to 1301663 its reverse (3661031), we get a palindrome (4962694).

The spelling of 1301663 in words is "one million, three hundred one thousand, six hundred sixty-three".