2220134687 has 4 divisors (see below), whose sum is σ = 2221816656. Its totient is φ = 2218452720.

The previous prime is 2220134681. The next prime is 2220134689. The reversal of 2220134687 is 7864310222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7864310222 = 2 ⋅3932155111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2220134687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220134681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839003 + ... + 841644.

It is an arithmetic number, because the mean of its divisors is an integer number (555454164).

Almost surely, 2^2220134687 is an apocalyptic number.

2220134687 is a deficient number, since it is larger than the sum of its proper divisors (1681969).

2220134687 is a wasteful number, since it uses less digits than its factorization.

2220134687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681968.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 2220134687 is about 47118.3052220684. The cubic root of 2220134687 is about 1304.5471311666.

The spelling of 2220134687 in words is "two billion, two hundred twenty million, one hundred thirty-four thousand, six hundred eighty-seven".