2684094661 has 4 divisors (see below), whose sum is σ = 2684612812. Its totient is φ = 2683576512.

The previous prime is 2684094631. The next prime is 2684094667. The reversal of 2684094661 is 1664904862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2559348100 + 124746561 = 50590^2 + 11169^2 .

It is a cyclic number.

It is not a de Polignac number, because 2684094661 - 2⁷ = 2684094533 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 (2684094667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251226 + ... + 261691.

It is an arithmetic number, because the mean of its divisors is an integer number (671153203).

Almost surely, 2^2684094661 is an apocalyptic number.

It is an amenable number.

2684094661 is a deficient number, since it is larger than the sum of its proper divisors (518151).

2684094661 is an equidigital number, since it uses as much as digits as its factorization.

2684094661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518150.

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 2684094661 is about 51808.2489667427. The cubic root of 2684094661 is about 1389.7369653930.

The spelling of 2684094661 in words is "two billion, six hundred eighty-four million, ninety-four thousand, six hundred sixty-one".