6649652667 has 8 divisors (see below), whose sum is σ = 10132804096. Its totient is φ = 3799801512.

The previous prime is 6649652627. The next prime is 6649652677. The reversal of 6649652667 is 7662569466.

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

It is not a de Polignac number, because 6649652667 - 2¹² = 6649648571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6649652627) 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, 158325043 + ... + 158325084.

It is an arithmetic number, because the mean of its divisors is an integer number (1266600512).

Almost surely, 2^6649652667 is an apocalyptic number.

6649652667 is a deficient number, since it is larger than the sum of its proper divisors (3483151429).

6649652667 is a wasteful number, since it uses less digits than its factorization.

6649652667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316650137.

The product of its digits is 19595520, while the sum is 57.

The square root of 6649652667 is about 81545.4024884297. The cubic root of 6649652667 is about 1880.4696151219.

The spelling of 6649652667 in words is "six billion, six hundred forty-nine million, six hundred fifty-two thousand, six hundred sixty-seven".