6553615066 has 4 divisors (see below), whose sum is σ = 9830422602. Its totient is φ = 3276807532.

The previous prime is 6553615063. The next prime is 6553615069. The reversal of 6553615066 is 6605163556.

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

It is an interprime number because it is at equal distance from previous prime (6553615063) and next prime (6553615069).

It can be written as a sum of positive squares in only one way, i.e., 6503616025 + 49999041 = 80645^2 + 7071^2 .

It is not an unprimeable number, because it can be changed into a prime (6553615063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1638403765 + ... + 1638403768.

Almost surely, 2^6553615066 is an apocalyptic number.

6553615066 is a deficient number, since it is larger than the sum of its proper divisors (3276807536).

6553615066 is a wasteful number, since it uses less digits than its factorization.

6553615066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3276807535.

The product of its (nonzero) digits is 486000, while the sum is 43.

The square root of 6553615066 is about 80954.4011527477. The cubic root of 6553615066 is about 1871.3727864802.

The spelling of 6553615066 in words is "six billion, five hundred fifty-three million, six hundred fifteen thousand, sixty-six".