555678720 has 264 divisors, whose sum is σ = 1992631680. Its totient is φ = 143032320.

The previous prime is 555678719. The next prime is 555678727. The reversal of 555678720 is 27876555.

555678720 is a `hidden beast` number, since 5 + 5 + 567 + 87 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555678727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1428286 + ... + 1428674.

Almost surely, 2^555678720 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 555678720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (996315840).

555678720 is an abundant number, since it is smaller than the sum of its proper divisors (1436952960).

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

555678720 is a wasteful number, since it uses less digits than its factorization.

555678720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 430 counting only the distinct ones).

The product of its (nonzero) digits is 588000, while the sum is 45.

The square root of 555678720 is about 23572.8386071767. The cubic root of 555678720 is about 822.1314368827.

The spelling of 555678720 in words is "five hundred fifty-five million, six hundred seventy-eight thousand, seven hundred twenty".