1685007 has 6 divisors (see below), whose sum is σ = 2433912. Its totient is φ = 1123332.

The previous prime is 1684999. The next prime is 1685011. The reversal of 1685007 is 7005861.

It is not a de Polignac number, because 1685007 - 2³ = 1684999 is a prime.

It is an Ulam number.

1685007 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 93603 + ... + 93620.

It is an arithmetic number, because the mean of its divisors is an integer number (405652).

2^1685007 is an apocalyptic number.

1685007 is a deficient number, since it is larger than the sum of its proper divisors (748905).

1685007 is a wasteful number, since it uses less digits than its factorization.

1685007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187229 (or 187226 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 1685007 is about 1298.0781948712. The cubic root of 1685007 is about 118.9964219907.

The spelling of 1685007 in words is "one million, six hundred eighty-five thousand, seven".