6650553506 has 4 divisors (see below), whose sum is σ = 9975830262. Its totient is φ = 3325276752.

The previous prime is 6650553491. The next prime is 6650553509. The reversal of 6650553506 is 6053550566.

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., 5729127481 + 921426025 = 75691^2 + 30355^2 .

It is not an unprimeable number, because it can be changed into a prime (6650553509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1662638375 + ... + 1662638378.

Almost surely, 2^6650553506 is an apocalyptic number.

6650553506 is a deficient number, since it is larger than the sum of its proper divisors (3325276756).

6650553506 is a wasteful number, since it uses less digits than its factorization.

6650553506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325276755.

The product of its (nonzero) digits is 405000, while the sum is 41.

The square root of 6650553506 is about 81550.9258439167. The cubic root of 6650553506 is about 1880.5545280219.

The spelling of 6650553506 in words is "six billion, six hundred fifty million, five hundred fifty-three thousand, five hundred six".