1687048 has 32 divisors (see below), whose sum is σ = 3636000. Its totient is φ = 725760.

The previous prime is 1687039. The next prime is 1687057. The reversal of 1687048 is 8407861.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1687039) and next prime (1687057).

It is a super-2 number, since 2×1687048² = 5692261908608, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1168 + ... + 2176.

It is an arithmetic number, because the mean of its divisors is an integer number (113625).

2^1687048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1687048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1818000).

1687048 is an abundant number, since it is smaller than the sum of its proper divisors (1948952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1687048 is a wasteful number, since it uses less digits than its factorization.

1687048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045 (or 1041 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 1687048 is about 1298.8641191441. The cubic root of 1687048 is about 119.0444482406.

The spelling of 1687048 in words is "one million, six hundred eighty-seven thousand, forty-eight".