2213741661 has 16 divisors (see below), whose sum is σ = 3129369600. Its totient is φ = 1388089008.

The previous prime is 2213741657. The next prime is 2213741669. The reversal of 2213741661 is 1661473122.

It is not a de Polignac number, because 2213741661 - 2² = 2213741657 is a prime.

It is a super-3 number, since 3×2213741661³ (a number of 29 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213741669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131781 + ... + 147626.

It is an arithmetic number, because the mean of its divisors is an integer number (195585600).

Almost surely, 2^2213741661 is an apocalyptic number.

It is an amenable number.

2213741661 is a deficient number, since it is larger than the sum of its proper divisors (915627939).

2213741661 is a wasteful number, since it uses less digits than its factorization.

2213741661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279568.

The product of its digits is 12096, while the sum is 33.

The square root of 2213741661 is about 47050.4161618152. The cubic root of 2213741661 is about 1303.2937504885.

The spelling of 2213741661 in words is "two billion, two hundred thirteen million, seven hundred forty-one thousand, six hundred sixty-one".