56066818 has 4 divisors (see below), whose sum is σ = 84100230. Its totient is φ = 28033408.

The previous prime is 56066807. The next prime is 56066827. The reversal of 56066818 is 81866065.

It is a happy number.

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., 39150049 + 16916769 = 6257^2 + 4113^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14016703 + ... + 14016706.

Almost surely, 2^56066818 is an apocalyptic number.

56066818 is a deficient number, since it is larger than the sum of its proper divisors (28033412).

56066818 is a wasteful number, since it uses less digits than its factorization.

56066818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28033411.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 56066818 is about 7487.7779080312. Note that the first 3 decimals coincide. The cubic root of 56066818 is about 382.7383406411.

The spelling of 56066818 in words is "fifty-six million, sixty-six thousand, eight hundred eighteen".