6542667674 has 4 divisors (see below), whose sum is σ = 9814001514. Its totient is φ = 3271333836.

The previous prime is 6542667581. The next prime is 6542667713. The reversal of 6542667674 is 4767662456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4051959025 + 2490708649 = 63655^2 + 49907^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1635666917 + ... + 1635666920.

Almost surely, 2^6542667674 is an apocalyptic number.

6542667674 is a deficient number, since it is larger than the sum of its proper divisors (3271333840).

6542667674 is a wasteful number, since it uses less digits than its factorization.

6542667674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3271333839.

The product of its digits is 10160640, while the sum is 53.

The square root of 6542667674 is about 80886.7583353419. The cubic root of 6542667674 is about 1870.3302031592.

The spelling of 6542667674 in words is "six billion, five hundred forty-two million, six hundred sixty-seven thousand, six hundred seventy-four".