1681275 has 24 divisors (see below), whose sum is σ = 2879280. Its totient is φ = 864640.

The previous prime is 1681271. The next prime is 1681279. The reversal of 1681275 is 5721861.

It is an interprime number because it is at equal distance from previous prime (1681271) and next prime (1681279).

It is not a de Polignac number, because 1681275 - 2² = 1681271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1681271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1789 + ... + 2561.

It is an arithmetic number, because the mean of its divisors is an integer number (119970).

2^1681275 is an apocalyptic number.

1681275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1681275 is a deficient number, since it is larger than the sum of its proper divisors (1198005).

1681275 is a wasteful number, since it uses less digits than its factorization.

1681275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815 (or 810 counting only the distinct ones).

The product of its digits is 3360, while the sum is 30.

The square root of 1681275 is about 1296.6398883267. The cubic root of 1681275 is about 118.9085048653.

The spelling of 1681275 in words is "one million, six hundred eighty-one thousand, two hundred seventy-five".