4645566 has 16 divisors (see below), whose sum is σ = 10323600. Its totient is φ = 1548504.

The previous prime is 4645561. The next prime is 4645583. The reversal of 4645566 is 6655464.

It is a happy number.

4645566 is a `hidden beast` number, since 4 + 645 + 5 + 6 + 6 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 4645566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4645561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42961 + ... + 43068.

It is an arithmetic number, because the mean of its divisors is an integer number (645225).

Almost surely, 2^4645566 is an apocalyptic number.

4645566 is an abundant number, since it is smaller than the sum of its proper divisors (5678034).

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

4645566 is a wasteful number, since it uses less digits than its factorization.

4645566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86040 (or 86034 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 4645566 is about 2155.3575109480. The cubic root of 4645566 is about 166.8576841015.

The spelling of 4645566 in words is "four million, six hundred forty-five thousand, five hundred sixty-six".