56666673 has 24 divisors (see below), whose sum is σ = 94680768. Its totient is φ = 31987872.

The previous prime is 56666671. The next prime is 56666681. The reversal of 56666673 is 37666665.

It is a happy number.

It is not a de Polignac number, because 56666673 - 2¹ = 56666671 is a prime.

It is a super-2 number, since 2×56666673² = 6422223657777858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56666671) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 190 + ... + 10647.

It is an arithmetic number, because the mean of its divisors is an integer number (3945032).

Almost surely, 2^56666673 is an apocalyptic number.

It is an amenable number.

56666673 is a deficient number, since it is larger than the sum of its proper divisors (38014095).

56666673 is a wasteful number, since it uses less digits than its factorization.

56666673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10933 (or 10930 counting only the distinct ones).

The product of its digits is 816480, while the sum is 45.

The square root of 56666673 is about 7527.7269477579. The cubic root of 56666673 is about 384.0984651466.

The spelling of 56666673 in words is "fifty-six million, six hundred sixty-six thousand, six hundred seventy-three".