1613697 has 4 divisors (see below), whose sum is σ = 2151600. Its totient is φ = 1075796.

The previous prime is 1613683. The next prime is 1613707. The reversal of 1613697 is 7963161.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7963161 = 3 ⋅2654387.

It is a cyclic number.

It is not a de Polignac number, because 1613697 - 2⁸ = 1613441 is a prime.

It is a D-number.

1613697 is a lucky number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1613497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268947 + ... + 268952.

It is an arithmetic number, because the mean of its divisors is an integer number (537900).

2^1613697 is an apocalyptic number.

It is an amenable number.

1613697 is a deficient number, since it is larger than the sum of its proper divisors (537903).

1613697 is an equidigital number, since it uses as much as digits as its factorization.

1613697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537902.

The product of its digits is 6804, while the sum is 33.

The square root of 1613697 is about 1270.3137407743. The cubic root of 1613697 is about 117.2935139143.

The spelling of 1613697 in words is "one million, six hundred thirteen thousand, six hundred ninety-seven".