56666535 has 8 divisors (see below), whose sum is σ = 90666480. Its totient is φ = 30222144.

The previous prime is 56666509. The next prime is 56666557. The reversal of 56666535 is 53566665.

56666535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 56666535 - 2¹² = 56662439 is a prime.

It is a super-2 number, since 2×56666535² = 6422192377812450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 1888870 + ... + 1888899.

It is an arithmetic number, because the mean of its divisors is an integer number (11333310).

Almost surely, 2^56666535 is an apocalyptic number.

56666535 is a deficient number, since it is larger than the sum of its proper divisors (33999945).

56666535 is a wasteful number, since it uses less digits than its factorization.

56666535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3777777.

The product of its digits is 486000, while the sum is 42.

The square root of 56666535 is about 7527.7177816387. The cubic root of 56666535 is about 384.0981533488.

The spelling of 56666535 in words is "fifty-six million, six hundred sixty-six thousand, five hundred thirty-five".