1985695 has 8 divisors (see below), whose sum is σ = 2391120. Its totient is φ = 1583040.

The previous prime is 1985689. The next prime is 1985713. The reversal of 1985695 is 5965891.

It is a happy number.

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

It is not a de Polignac number, because 1985695 - 2⁵ = 1985663 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1560 + ... + 2530.

It is an arithmetic number, because the mean of its divisors is an integer number (298890).

2^1985695 is an apocalyptic number.

1985695 is a deficient number, since it is larger than the sum of its proper divisors (405425).

1985695 is an equidigital number, since it uses as much as digits as its factorization.

1985695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385.

The product of its digits is 97200, while the sum is 43.

The square root of 1985695 is about 1409.1469050457. The cubic root of 1985695 is about 125.6909997824.

The spelling of 1985695 in words is "one million, nine hundred eighty-five thousand, six hundred ninety-five".