2170668956 has 6 divisors (see below), whose sum is σ = 3798670680. Its totient is φ = 1085334476.

The previous prime is 2170668947. The next prime is 2170668959. The reversal of 2170668956 is 6598660712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2170668959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271333616 + ... + 271333623.

It is an arithmetic number, because the mean of its divisors is an integer number (633111780).

Almost surely, 2^2170668956 is an apocalyptic number.

It is an amenable number.

2170668956 is a deficient number, since it is larger than the sum of its proper divisors (1628001724).

2170668956 is a wasteful number, since it uses less digits than its factorization.

2170668956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542667243 (or 542667241 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 2170668956 is about 46590.4384611263. The cubic root of 2170668956 is about 1294.7856129054.

The spelling of 2170668956 in words is "two billion, one hundred seventy million, six hundred sixty-eight thousand, nine hundred fifty-six".