1681097 has 8 divisors (see below), whose sum is σ = 1862112. Its totient is φ = 1504800.

The previous prime is 1681091. The next prime is 1681103. The reversal of 1681097 is 7901861.

It is an interprime number because it is at equal distance from previous prime (1681091) and next prime (1681103).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1681097 - 2⁶ = 1681033 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1681091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404 + ... + 1877.

It is an arithmetic number, because the mean of its divisors is an integer number (232764).

2^1681097 is an apocalyptic number.

It is an amenable number.

1681097 is a deficient number, since it is larger than the sum of its proper divisors (181015).

1681097 is a wasteful number, since it uses less digits than its factorization.

1681097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2359.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 1681097 is about 1296.5712475603. The cubic root of 1681097 is about 118.9043083555.

The spelling of 1681097 in words is "one million, six hundred eighty-one thousand, ninety-seven".