2163697 has 4 divisors (see below), whose sum is σ = 2166640. Its totient is φ = 2160756.

The previous prime is 2163691. The next prime is 2163703. The reversal of 2163697 is 7963612.

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 a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (2163691) and next prime (2163703).

It is a cyclic number.

It is not a de Polignac number, because 2163697 - 2⁷ = 2163569 is a prime.

It is a Duffinian number.

2163697 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2163691) 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, 718 + ... + 2200.

It is an arithmetic number, because the mean of its divisors is an integer number (541660).

2^2163697 is an apocalyptic number.

It is an amenable number.

2163697 is a deficient number, since it is larger than the sum of its proper divisors (2943).

2163697 is a wasteful number, since it uses less digits than its factorization.

2163697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942.

The product of its digits is 13608, while the sum is 34.

The square root of 2163697 is about 1470.9510528906. The cubic root of 2163697 is about 129.3397888572.

The spelling of 2163697 in words is "two million, one hundred sixty-three thousand, six hundred ninety-seven".