1218601 has 2 divisors, whose sum is σ = 1218602. Its totient is φ = 1218600.

The previous prime is 1218583. The next prime is 1218617. The reversal of 1218601 is 1068121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1212201 + 6400 = 1101^2 + 80^2 .

It is a cyclic number.

It is not a de Polignac number, because 1218601 - 2⁷ = 1218473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1218631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609300 + 609301.

It is an arithmetic number, because the mean of its divisors is an integer number (609301).

2^1218601 is an apocalyptic number.

It is an amenable number.

1218601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1218601 is an equidigital number, since it uses as much as digits as its factorization.

1218601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 1218601 is about 1103.9026225170. The cubic root of 1218601 is about 106.8121138658.

The spelling of 1218601 in words is "one million, two hundred eighteen thousand, six hundred one".