6666552 has 48 divisors (see below), whose sum is σ = 18406440. Its totient is φ = 2179008.

The previous prime is 6666551. The next prime is 6666563. The reversal of 6666552 is 2556666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2943 + ... + 4689.

Almost surely, 2^6666552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6666552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9203220).

6666552 is an abundant number, since it is smaller than the sum of its proper divisors (11739888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6666552 is a wasteful number, since it uses less digits than its factorization.

6666552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812 (or 1805 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 6666552 is about 2581.9666922716. The cubic root of 6666552 is about 188.2061267154.

The spelling of 6666552 in words is "six million, six hundred sixty-six thousand, five hundred fifty-two".