5656166620 has 48 divisors (see below), whose sum is σ = 13464894240. Its totient is φ = 1978511616.

The previous prime is 5656166609. The next prime is 5656166627. The reversal of 5656166620 is 266616565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5656166627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 567547 + ... + 577426.

It is an arithmetic number, because the mean of its divisors is an integer number (280518630).

Almost surely, 2^5656166620 is an apocalyptic number.

It is an amenable number.

5656166620 is an abundant number, since it is smaller than the sum of its proper divisors (7808727620).

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

5656166620 is a wasteful number, since it uses less digits than its factorization.

5656166620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145014 (or 1145012 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 43.

The square root of 5656166620 is about 75207.4904514171. The cubic root of 5656166620 is about 1781.7252367825.

The spelling of 5656166620 in words is "five billion, six hundred fifty-six million, one hundred sixty-six thousand, six hundred twenty".