1216701 has 14 divisors (see below), whose sum is σ = 1825310. Its totient is φ = 810648.

The previous prime is 1216693. The next prime is 1216711. The reversal of 1216701 is 1076121.

It can be written as a sum of positive squares in only one way, i.e., 1052676 + 164025 = 1026^2 + 405^2 .

It is not a de Polignac number, because 1216701 - 2³ = 1216693 is a prime.

It is a super-2 number, since 2×1216701² = 2960722646802, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

1216701 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216711) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 106 + ... + 1563.

2^1216701 is an apocalyptic number.

It is an amenable number.

1216701 is a deficient number, since it is larger than the sum of its proper divisors (608609).

1216701 is an frugal number, since it uses more digits than its factorization.

1216701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687 (or 1672 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 1216701 is about 1103.0417036540. The cubic root of 1216701 is about 106.7565724207.

The spelling of 1216701 in words is "one million, two hundred sixteen thousand, seven hundred one".