1218207 has 8 divisors (see below), whose sum is σ = 1676800. Its totient is φ = 785880.

The previous prime is 1218199. The next prime is 1218209. The reversal of 1218207 is 7028121.

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

It is not a de Polignac number, because 1218207 - 2³ = 1218199 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 (1218209) 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, 6457 + ... + 6642.

It is an arithmetic number, because the mean of its divisors is an integer number (209600).

2^1218207 is an apocalyptic number.

1218207 is a deficient number, since it is larger than the sum of its proper divisors (458593).

1218207 is a wasteful number, since it uses less digits than its factorization.

1218207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13133.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1218207 is about 1103.7241503202. The cubic root of 1218207 is about 106.8006010711.

The spelling of 1218207 in words is "one million, two hundred eighteen thousand, two hundred seven".