56106663 has 4 divisors (see below), whose sum is σ = 74808888. Its totient is φ = 37404440.

The previous prime is 56106649. The next prime is 56106667. The reversal of 56106663 is 36660165.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56106663 - 2⁹ = 56106151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56106667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9351108 + ... + 9351113.

It is an arithmetic number, because the mean of its divisors is an integer number (18702222).

Almost surely, 2^56106663 is an apocalyptic number.

56106663 is a deficient number, since it is larger than the sum of its proper divisors (18702225).

56106663 is a wasteful number, since it uses less digits than its factorization.

56106663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18702224.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 56106663 is about 7490.4381046772. The cubic root of 56106663 is about 382.8289860444.

The spelling of 56106663 in words is "fifty-six million, one hundred six thousand, six hundred sixty-three".