56666170 has 48 divisors (see below), whose sum is σ = 117518688. Its totient is φ = 19507680.

The previous prime is 56666149. The next prime is 56666173. The reversal of 56666170 is 7166665.

It is a happy number.

It is a super-2 number, since 2×56666170² = 6422109644937800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56666173) 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, 38997 + ... + 40423.

It is an arithmetic number, because the mean of its divisors is an integer number (2448306).

Almost surely, 2^56666170 is an apocalyptic number.

56666170 is an abundant number, since it is smaller than the sum of its proper divisors (60852518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56666170 is a wasteful number, since it uses less digits than its factorization.

56666170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 56666170 is about 7527.6935378640. The cubic root of 56666170 is about 384.0973286638.

The spelling of 56666170 in words is "fifty-six million, six hundred sixty-six thousand, one hundred seventy".