2172786297 has 8 divisors (see below), whose sum is σ = 3160416480. Its totient is φ = 1316840160.

The previous prime is 2172786293. The next prime is 2172786313. The reversal of 2172786297 is 7926872712.

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

It is not a de Polignac number, because 2172786297 - 2² = 2172786293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2172786293) 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, 32920972 + ... + 32921037.

It is an arithmetic number, because the mean of its divisors is an integer number (395052060).

Almost surely, 2^2172786297 is an apocalyptic number.

It is an amenable number.

2172786297 is a deficient number, since it is larger than the sum of its proper divisors (987630183).

2172786297 is a wasteful number, since it uses less digits than its factorization.

2172786297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65842023.

The product of its digits is 1185408, while the sum is 51.

The square root of 2172786297 is about 46613.1558360942. The cubic root of 2172786297 is about 1295.2064680764.

The spelling of 2172786297 in words is "two billion, one hundred seventy-two million, seven hundred eighty-six thousand, two hundred ninety-seven".