1868705 has 8 divisors (see below), whose sum is σ = 2266152. Its totient is φ = 1479168.

The previous prime is 1868701. The next prime is 1868717. The reversal of 1868705 is 5078681.

1868705 = T₃₀ + T₃₁ + ... + T₂₂₃.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 667489 + 1201216 = 817^2 + 1096^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1868705 - 2² = 1868701 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1868701) 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, 1442 + ... + 2411.

It is an arithmetic number, because the mean of its divisors is an integer number (283269).

2^1868705 is an apocalyptic number.

It is an amenable number.

1868705 is a deficient number, since it is larger than the sum of its proper divisors (397447).

1868705 is an equidigital number, since it uses as much as digits as its factorization.

1868705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3955.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 1868705 is about 1367.0058522186. The cubic root of 1868705 is about 123.1724507257.

The spelling of 1868705 in words is "one million, eight hundred sixty-eight thousand, seven hundred five".