2116570 has 8 divisors (see below), whose sum is σ = 3809844. Its totient is φ = 846624.

The previous prime is 2116561. The next prime is 2116571. The reversal of 2116570 is 756112.

It can be written as a sum of positive squares in 2 ways, for example, as 2042041 + 74529 = 1429^2 + 273^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2116571) 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, 105819 + ... + 105838.

2^2116570 is an apocalyptic number.

2116570 is a deficient number, since it is larger than the sum of its proper divisors (1693274).

2116570 is a wasteful number, since it uses less digits than its factorization.

2116570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211664.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 2116570 is about 1454.8436342095. The cubic root of 2116570 is about 128.3938471381.

The spelling of 2116570 in words is "two million, one hundred sixteen thousand, five hundred seventy".