6666666734 has 32 divisors (see below), whose sum is σ = 12640345536. Its totient is φ = 2566080000.

The previous prime is 6666666661. The next prime is 6666666757. The reversal of 6666666734 is 4376666666.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6666666734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488267 + ... + 501734.

It is an arithmetic number, because the mean of its divisors is an integer number (395010798).

Almost surely, 2^6666666734 is an apocalyptic number.

6666666734 is a deficient number, since it is larger than the sum of its proper divisors (5973678802).

6666666734 is a wasteful number, since it uses less digits than its factorization.

6666666734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990060.

The product of its digits is 23514624, while the sum is 56.

The square root of 6666666734 is about 81649.6585051034. The cubic root of 6666666734 is about 1882.0720640984.

The spelling of 6666666734 in words is "six billion, six hundred sixty-six million, six hundred sixty-six thousand, seven hundred thirty-four".