1687007 has 8 divisors (see below), whose sum is σ = 1936032. Its totient is φ = 1440000.

The previous prime is 1686983. The next prime is 1687009. The reversal of 1687007 is 7007861.

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 1687007 - 2⁶ = 1686943 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1687009) 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, 2507 + ... + 3107.

It is an arithmetic number, because the mean of its divisors is an integer number (242004).

2^1687007 is an apocalyptic number.

1687007 is a deficient number, since it is larger than the sum of its proper divisors (249025).

1687007 is an equidigital number, since it uses as much as digits as its factorization.

1687007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 1687007 is about 1298.8483360270. The cubic root of 1687007 is about 119.0434838614.

The spelling of 1687007 in words is "one million, six hundred eighty-seven thousand, seven".