1009685 has 4 divisors (see below), whose sum is σ = 1211628. Its totient is φ = 807744.

The previous prime is 1009669. The next prime is 1009727. The reversal of 1009685 is 5869001.

1009685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 611524 + 398161 = 782^2 + 631^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009685 - 2⁴ = 1009669 is a prime.

It is a Duffinian number.

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, 100964 + ... + 100973.

It is an arithmetic number, because the mean of its divisors is an integer number (302907).

2^1009685 is an apocalyptic number.

It is an amenable number.

1009685 is a deficient number, since it is larger than the sum of its proper divisors (201943).

1009685 is an equidigital number, since it uses as much as digits as its factorization.

1009685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201942.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1009685 is about 1004.8308315333. The cubic root of 1009685 is about 100.3217966915.

The spelling of 1009685 in words is "one million, nine thousand, six hundred eighty-five".