56606666 has 8 divisors (see below), whose sum is σ = 87838020. Its totient is φ = 27327328.

The previous prime is 56606663. The next prime is 56606689. The reversal of 56606666 is 66660665.

It can be written as a sum of positive squares in 2 ways, for example, as 50822641 + 5784025 = 7129^2 + 2405^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

56606666 is a modest number, since divided by 6666 gives 5660 as remainder.

It is not an unprimeable number, because it can be changed into a prime (56606663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487931 + ... + 488046.

Almost surely, 2^56606666 is an apocalyptic number.

56606666 is a deficient number, since it is larger than the sum of its proper divisors (31231354).

56606666 is a wasteful number, since it uses less digits than its factorization.

56606666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976008.

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 56606666 is about 7523.7401603192. The cubic root of 56606666 is about 383.9628372962.

The spelling of 56606666 in words is "fifty-six million, six hundred six thousand, six hundred sixty-six".