6667948509 has 8 divisors (see below), whose sum is σ = 8955493440. Its totient is φ = 4412851296.

The previous prime is 6667948501. The next prime is 6667948517. The reversal of 6667948509 is 9058497666.

It is an interprime number because it is at equal distance from previous prime (6667948501) and next prime (6667948517).

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

It is not a de Polignac number, because 6667948509 - 2³ = 6667948501 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6667948501) 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, 8111449 + ... + 8112270.

It is an arithmetic number, because the mean of its divisors is an integer number (1119436680).

Almost surely, 2^6667948509 is an apocalyptic number.

It is an amenable number.

6667948509 is a deficient number, since it is larger than the sum of its proper divisors (2287544931).

6667948509 is a wasteful number, since it uses less digits than its factorization.

6667948509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16223859.

The product of its (nonzero) digits is 19595520, while the sum is 60.

The square root of 6667948509 is about 81657.5073646018. The cubic root of 6667948509 is about 1882.1926760136.

The spelling of 6667948509 in words is "six billion, six hundred sixty-seven million, nine hundred forty-eight thousand, five hundred nine".