1218670 has 8 divisors (see below), whose sum is σ = 2193624. Its totient is φ = 487464.

The previous prime is 1218653. The next prime is 1218683. The reversal of 1218670 is 768121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60924 + ... + 60943.

It is an arithmetic number, because the mean of its divisors is an integer number (274203).

2^1218670 is an apocalyptic number.

1218670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1218670 is a deficient number, since it is larger than the sum of its proper divisors (974954).

1218670 is a wasteful number, since it uses less digits than its factorization.

1218670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121874.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1218670 is about 1103.9338748313. The cubic root of 1218670 is about 106.8141298105.

The spelling of 1218670 in words is "one million, two hundred eighteen thousand, six hundred seventy".