56601620 has 48 divisors (see below), whose sum is σ = 128338560. Its totient is φ = 20904576.

The previous prime is 56601613. The next prime is 56601641. The reversal of 56601620 is 2610665.

It is a self number, because there is not a number n which added to its sum of digits gives 56601620.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11219 + ... + 15461.

It is an arithmetic number, because the mean of its divisors is an integer number (2673720).

Almost surely, 2^56601620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56601620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64169280).

56601620 is an abundant number, since it is smaller than the sum of its proper divisors (71736940).

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

56601620 is a wasteful number, since it uses less digits than its factorization.

56601620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4304 (or 4302 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 56601620 is about 7523.4048143111. The cubic root of 56601620 is about 383.9514279565.

The spelling of 56601620 in words is "fifty-six million, six hundred one thousand, six hundred twenty".