6649534798 has 4 divisors (see below), whose sum is σ = 9974302200. Its totient is φ = 3324767398.

The previous prime is 6649534789. The next prime is 6649534817. The reversal of 6649534798 is 8974359466.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1662383698 + ... + 1662383701.

It is an arithmetic number, because the mean of its divisors is an integer number (2493575550).

Almost surely, 2^6649534798 is an apocalyptic number.

6649534798 is a deficient number, since it is larger than the sum of its proper divisors (3324767402).

6649534798 is a wasteful number, since it uses less digits than its factorization.

6649534798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3324767401.

The product of its digits is 39191040, while the sum is 61.

The square root of 6649534798 is about 81544.6797651447. The cubic root of 6649534798 is about 1880.4585042467.

The spelling of 6649534798 in words is "six billion, six hundred forty-nine million, five hundred thirty-four thousand, seven hundred ninety-eight".