1613897 has 4 divisors (see below), whose sum is σ = 1618896. Its totient is φ = 1608900.

The previous prime is 1613873. The next prime is 1613921. The reversal of 1613897 is 7983161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1613873) and next prime (1613921).

It is a cyclic number.

It is not a de Polignac number, because 1613897 - 2⁸ = 1613641 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1613867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1979 + ... + 2672.

It is an arithmetic number, because the mean of its divisors is an integer number (404724).

2^1613897 is an apocalyptic number.

It is an amenable number.

1613897 is a deficient number, since it is larger than the sum of its proper divisors (4999).

1613897 is an equidigital number, since it uses as much as digits as its factorization.

1613897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4998.

The product of its digits is 9072, while the sum is 35.

The square root of 1613897 is about 1270.3924590456. The cubic root of 1613897 is about 117.2983594612.

The spelling of 1613897 in words is "one million, six hundred thirteen thousand, eight hundred ninety-seven".