1681677 has 12 divisors (see below), whose sum is σ = 2471040. Its totient is φ = 1101768.

The previous prime is 1681661. The next prime is 1681679. The reversal of 1681677 is 7761861.

It is a happy number.

It is not a de Polignac number, because 1681677 - 2⁴ = 1681661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681679) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1053 + ... + 2114.

It is an arithmetic number, because the mean of its divisors is an integer number (205920).

2^1681677 is an apocalyptic number.

It is an amenable number.

1681677 is a deficient number, since it is larger than the sum of its proper divisors (789363).

1681677 is a wasteful number, since it uses less digits than its factorization.

1681677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3232 (or 3229 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 1681677 is about 1296.7948951164. The cubic root of 1681677 is about 118.9179812863.

The spelling of 1681677 in words is "one million, six hundred eighty-one thousand, six hundred seventy-seven".