56655066 has 64 divisors (see below), whose sum is σ = 127628928. Its totient is φ = 16651008.

The previous prime is 56655061. The next prime is 56655083. The reversal of 56655066 is 66055665.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56655061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193216 + ... + 193508.

It is an arithmetic number, because the mean of its divisors is an integer number (1994202).

Almost surely, 2^56655066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56655066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63814464).

56655066 is an abundant number, since it is smaller than the sum of its proper divisors (70973862).

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

56655066 is a wasteful number, since it uses less digits than its factorization.

56655066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415.

The product of its (nonzero) digits is 162000, while the sum is 39.

The square root of 56655066 is about 7526.9559584204. The cubic root of 56655066 is about 384.0722384712.

It can be divided in two parts, 5665 and 5066, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 56655066 in words is "fifty-six million, six hundred fifty-five thousand, sixty-six".