6552755666 has 4 divisors (see below), whose sum is σ = 9829133502. Its totient is φ = 3276377832.

The previous prime is 6552755633. The next prime is 6552755687. The reversal of 6552755666 is 6665572556.

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., 6455319025 + 97436641 = 80345^2 + 9871^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1638188915 + ... + 1638188918.

Almost surely, 2^6552755666 is an apocalyptic number.

6552755666 is a deficient number, since it is larger than the sum of its proper divisors (3276377836).

6552755666 is a wasteful number, since it uses less digits than its factorization.

6552755666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276377835.

The product of its digits is 11340000, while the sum is 53.

The square root of 6552755666 is about 80949.0930523622. The cubic root of 6552755666 is about 1871.2909828721.

The spelling of 6552755666 in words is "six billion, five hundred fifty-two million, seven hundred fifty-five thousand, six hundred sixty-six".