1218087 has 24 divisors (see below), whose sum is σ = 1965600. Its totient is φ = 721728.

The previous prime is 1218043. The next prime is 1218089. The reversal of 1218087 is 7808121.

It is not a de Polignac number, because 1218087 - 2⁸ = 1217831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1218087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3214 + ... + 3572.

It is an arithmetic number, because the mean of its divisors is an integer number (81900).

2^1218087 is an apocalyptic number.

1218087 is a deficient number, since it is larger than the sum of its proper divisors (747513).

1218087 is a wasteful number, since it uses less digits than its factorization.

1218087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 1218087 is about 1103.6697875724. The cubic root of 1218087 is about 106.7970941430.

The spelling of 1218087 in words is "one million, two hundred eighteen thousand, eighty-seven".