1423685 has 4 divisors (see below), whose sum is σ = 1708428. Its totient is φ = 1138944.

The previous prime is 1423663. The next prime is 1423691. The reversal of 1423685 is 5863241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5863241 = 1487 ⋅3943.

It can be written as a sum of positive squares in 2 ways, for example, as 835396 + 588289 = 914^2 + 767^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423685 - 2¹⁰ = 1422661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142364 + ... + 142373.

It is an arithmetic number, because the mean of its divisors is an integer number (427107).

2^1423685 is an apocalyptic number.

It is an amenable number.

1423685 is a deficient number, since it is larger than the sum of its proper divisors (284743).

1423685 is an equidigital number, since it uses as much as digits as its factorization.

1423685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284742.

The product of its digits is 5760, while the sum is 29.

The square root of 1423685 is about 1193.1827186144. The cubic root of 1423685 is about 112.4962303264.

The spelling of 1423685 in words is "one million, four hundred twenty-three thousand, six hundred eighty-five".