2172697 has 8 divisors (see below), whose sum is σ = 2266880. Its totient is φ = 2080080.

The previous prime is 2172679. The next prime is 2172701. The reversal of 2172697 is 7962712.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2172697 is a prime.

It is a super-2 number, since 2×2172697² = 9441224507618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3058 + ... + 3700.

It is an arithmetic number, because the mean of its divisors is an integer number (283360).

2^2172697 is an apocalyptic number.

It is an amenable number.

2172697 is a deficient number, since it is larger than the sum of its proper divisors (94183).

2172697 is a wasteful number, since it uses less digits than its factorization.

2172697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783.

The product of its digits is 10584, while the sum is 34.

The square root of 2172697 is about 1474.0071234563. The cubic root of 2172697 is about 129.5188724402.

The spelling of 2172697 in words is "two million, one hundred seventy-two thousand, six hundred ninety-seven".