1707997 has 4 divisors (see below), whose sum is σ = 1712476. Its totient is φ = 1703520.

The previous prime is 1707983. The next prime is 1708009. The reversal of 1707997 is 7997071.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 301401 + 1406596 = 549^2 + 1186^2 .

It is a cyclic number.

It is not a de Polignac number, because 1707997 - 2⁷ = 1707869 is a prime.

It is a Duffinian number.

1707997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1707907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1608 + ... + 2449.

It is an arithmetic number, because the mean of its divisors is an integer number (428119).

2^1707997 is an apocalyptic number.

It is an amenable number.

1707997 is a deficient number, since it is larger than the sum of its proper divisors (4479).

1707997 is an equidigital number, since it uses as much as digits as its factorization.

1707997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4478.

The product of its (nonzero) digits is 27783, while the sum is 40.

The square root of 1707997 is about 1306.9035924658. The cubic root of 1707997 is about 119.5351693547.

It can be divided in two parts, 1707 and 997, that added together give a square (2704 = 52²).

The spelling of 1707997 in words is "one million, seven hundred seven thousand, nine hundred ninety-seven".