1696981 has 8 divisors (see below), whose sum is σ = 1993824. Its totient is φ = 1423920.

The previous prime is 1696979. The next prime is 1697027. The reversal of 1696981 is 1896961.

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 1696981 - 2¹ = 1696979 is a prime.

It is a super-2 number, since 2×1696981² = 5759489028722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1696951) 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, 5791 + ... + 6076.

It is an arithmetic number, because the mean of its divisors is an integer number (249228).

2^1696981 is an apocalyptic number.

1696981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1696981 is a deficient number, since it is larger than the sum of its proper divisors (296843).

1696981 is a wasteful number, since it uses less digits than its factorization.

1696981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11891.

The product of its digits is 23328, while the sum is 40.

The square root of 1696981 is about 1302.6822329333. The cubic root of 1696981 is about 119.2776278050.

The spelling of 1696981 in words is "one million, six hundred ninety-six thousand, nine hundred eighty-one".