555671720 has 128 divisors (see below), whose sum is σ = 1393459200. Its totient is φ = 198468864.

The previous prime is 555671719. The next prime is 555671731. The reversal of 555671720 is 27176555.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1450649 + ... + 1451031.

It is an arithmetic number, because the mean of its divisors is an integer number (10886400).

Almost surely, 2^555671720 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 555671720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (696729600).

555671720 is an abundant number, since it is smaller than the sum of its proper divisors (837787480).

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

555671720 is a wasteful number, since it uses less digits than its factorization.

555671720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 38.

The square root of 555671720 is about 23572.6901307424. The cubic root of 555671720 is about 822.1279846815.

The spelling of 555671720 in words is "five hundred fifty-five million, six hundred seventy-one thousand, seven hundred twenty".