6666650061 has 32 divisors (see below), whose sum is σ = 9627542400. Its totient is φ = 4089553920.

The previous prime is 6666650017. The next prime is 6666650069. The reversal of 6666650061 is 1600566666.

It is not a de Polignac number, because 6666650061 - 2²⁵ = 6633095629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6666649995 and 6666650022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666650069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 528945 + ... + 541401.

It is an arithmetic number, because the mean of its divisors is an integer number (300860700).

Almost surely, 2^6666650061 is an apocalyptic number.

It is an amenable number.

6666650061 is a deficient number, since it is larger than the sum of its proper divisors (2960892339).

6666650061 is a wasteful number, since it uses less digits than its factorization.

6666650061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12749.

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 6666650061 is about 81649.5564041839. The cubic root of 6666650061 is about 1882.0704951077.

The spelling of 6666650061 in words is "six billion, six hundred sixty-six million, six hundred fifty thousand, sixty-one".