55680620 has 24 divisors (see below), whose sum is σ = 117776400. Its totient is φ = 22110912.

The previous prime is 55680613. The next prime is 55680623. The reversal of 55680620 is 2608655.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55680623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7235 + ... + 12794.

It is an arithmetic number, because the mean of its divisors is an integer number (4907350).

Almost surely, 2^55680620 is an apocalyptic number.

It is an amenable number.

55680620 is an abundant number, since it is smaller than the sum of its proper divisors (62095780).

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

55680620 is a wasteful number, since it uses less digits than its factorization.

55680620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20177 (or 20175 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 55680620 is about 7461.9447867161. The cubic root of 55680620 is about 381.8575256990.

The spelling of 55680620 in words is "fifty-five million, six hundred eighty thousand, six hundred twenty".