2016654661 has 12 divisors (see below), whose sum is σ = 2432438112. Its totient is φ = 1637582184.

The previous prime is 2016654643. The next prime is 2016654707. The reversal of 2016654661 is 1664566102.

It is not a de Polignac number, because 2016654661 - 2⁹ = 2016654149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2016654661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2016654061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 396495 + ... + 401548.

It is an arithmetic number, because the mean of its divisors is an integer number (202703176).

Almost surely, 2^2016654661 is an apocalyptic number.

It is an amenable number.

2016654661 is a deficient number, since it is larger than the sum of its proper divisors (415783451).

2016654661 is an equidigital number, since it uses as much as digits as its factorization.

2016654661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798088 (or 798069 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 2016654661 is about 44907.1782792016. The cubic root of 2016654661 is about 1263.4086466071.

The spelling of 2016654661 in words is "two billion, sixteen million, six hundred fifty-four thousand, six hundred sixty-one".