2201684857 has 4 divisors (see below), whose sum is σ = 2212748800. Its totient is φ = 2190620916.

The previous prime is 2201684851. The next prime is 2201684899. The reversal of 2201684857 is 7584861022.

It is a happy number.

2201684857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2201684857 is a prime.

It is a super-2 number, since 2×2201684857² = 9694832419086220898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2201684851) 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, 5531673 + ... + 5532070.

It is an arithmetic number, because the mean of its divisors is an integer number (553187200).

Almost surely, 2^2201684857 is an apocalyptic number.

It is an amenable number.

2201684857 is a deficient number, since it is larger than the sum of its proper divisors (11063943).

2201684857 is a wasteful number, since it uses less digits than its factorization.

2201684857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11063942.

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 2201684857 is about 46922.1147967566. The cubic root of 2201684857 is about 1300.9233788878.

The spelling of 2201684857 in words is "two billion, two hundred one million, six hundred eighty-four thousand, eight hundred fifty-seven".