1218706 has 16 divisors (see below), whose sum is σ = 1926144. Its totient is φ = 577584.

The previous prime is 1218691. The next prime is 1218709. The reversal of 1218706 is 6078121.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (1218709) 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, 2991 + ... + 3373.

It is an arithmetic number, because the mean of its divisors is an integer number (120384).

2^1218706 is an apocalyptic number.

1218706 is a deficient number, since it is larger than the sum of its proper divisors (707438).

1218706 is a wasteful number, since it uses less digits than its factorization.

1218706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465.

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

The square root of 1218706 is about 1103.9501800353. The cubic root of 1218706 is about 106.8151815775.

It can be divided in two parts, 121 and 8706, that multiplied together give a triangular number (1053426 = T₁₄₅₁).

The spelling of 1218706 in words is "one million, two hundred eighteen thousand, seven hundred six".