1217701 has 4 divisors (see below), whose sum is σ = 1238400. Its totient is φ = 1197004.

The previous prime is 1217687. The next prime is 1217719. The reversal of 1217701 is 1077121.

It is the 451-st star number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1077121 = 149 ⋅7229.

It is a cyclic number.

It is not a de Polignac number, because 1217701 - 2⁵ = 1217669 is a prime.

It is a Duffinian number.

1217701 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217731) 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, 10261 + ... + 10378.

It is an arithmetic number, because the mean of its divisors is an integer number (309600).

2^1217701 is an apocalyptic number.

It is an amenable number.

1217701 is a deficient number, since it is larger than the sum of its proper divisors (20699).

1217701 is an equidigital number, since it uses as much as digits as its factorization.

1217701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20698.

The product of its (nonzero) digits is 98, while the sum is 19.

The square root of 1217701 is about 1103.4949025709. The cubic root of 1217701 is about 106.7858119622.

It can be divided in two parts, 121770 and 1, that added together give a triangular number (121771 = T₄₉₃).

The spelling of 1217701 in words is "one million, two hundred seventeen thousand, seven hundred one".