6666687741 has 8 divisors (see below), whose sum is σ = 10158762304. Its totient is φ = 3809535840.

The previous prime is 6666687721. The next prime is 6666687761. The reversal of 6666687741 is 1477866666.

It is an interprime number because it is at equal distance from previous prime (6666687721) and next prime (6666687761).

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

It is not a de Polignac number, because 6666687741 - 2⁷ = 6666687613 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 (6666687721) 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, 158730640 + ... + 158730681.

It is an arithmetic number, because the mean of its divisors is an integer number (1269845288).

Almost surely, 2^6666687741 is an apocalyptic number.

It is an amenable number.

6666687741 is a deficient number, since it is larger than the sum of its proper divisors (3492074563).

6666687741 is a wasteful number, since it uses less digits than its factorization.

6666687741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317461331.

The product of its digits is 12192768, while the sum is 57.

The square root of 6666687741 is about 81649.7871460790. The cubic root of 6666687741 is about 1882.0740409307.

The spelling of 6666687741 in words is "six billion, six hundred sixty-six million, six hundred eighty-seven thousand, seven hundred forty-one".