6667279394 has 8 divisors (see below), whose sum is σ = 10345778460. Its totient is φ = 3218686576.

The previous prime is 6667279391. The next prime is 6667279403. The reversal of 6667279394 is 4939727666.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6207391369 + 459888025 = 78787^2 + 21445^2 .

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

It is a super-2 number, since 2×6667279394² = 88905229035314014472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6667279391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57476489 + ... + 57476604.

Almost surely, 2^6667279394 is an apocalyptic number.

6667279394 is a deficient number, since it is larger than the sum of its proper divisors (3678499066).

6667279394 is a wasteful number, since it uses less digits than its factorization.

6667279394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114953124.

The product of its digits is 20575296, while the sum is 59.

The square root of 6667279394 is about 81653.4101798572. The cubic root of 6667279394 is about 1882.1297158453.

The spelling of 6667279394 in words is "six billion, six hundred sixty-seven million, two hundred seventy-nine thousand, three hundred ninety-four".