1681692 has 24 divisors (see below), whose sum is σ = 3944976. Its totient is φ = 557568.

The previous prime is 1681679. The next prime is 1681703. The reversal of 1681692 is 2961861.

It is a congruent number.

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, 4038 + ... + 4434.

It is an arithmetic number, because the mean of its divisors is an integer number (164374).

2^1681692 is an apocalyptic number.

1681692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

1681692 is the 1059-th pentagonal number.

It is an amenable number.

1681692 is an abundant number, since it is smaller than the sum of its proper divisors (2263284).

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

1681692 is a wasteful number, since it uses less digits than its factorization.

1681692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757 (or 755 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The square root of 1681692 is about 1296.8006785933. The cubic root of 1681692 is about 118.9183348549.

The spelling of 1681692 in words is "one million, six hundred eighty-one thousand, six hundred ninety-two".