2167006661 has 8 divisors (see below), whose sum is σ = 2252995584. Its totient is φ = 2082595680.

The previous prime is 2167006657. The next prime is 2167006669. The reversal of 2167006661 is 1666007612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2167006661 - 2² = 2167006657 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 (2167006669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391685 + ... + 397178.

It is an arithmetic number, because the mean of its divisors is an integer number (281624448).

Almost surely, 2^2167006661 is an apocalyptic number.

It is an amenable number.

2167006661 is a deficient number, since it is larger than the sum of its proper divisors (85988923).

2167006661 is an equidigital number, since it uses as much as digits as its factorization.

2167006661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788971.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 2167006661 is about 46551.1187942889. The cubic root of 2167006661 is about 1294.0570270378.

The spelling of 2167006661 in words is "two billion, one hundred sixty-seven million, six thousand, six hundred sixty-one".