555961968 has 100 divisors (see below), whose sum is σ = 1648519488. Its totient is φ = 180783360.

The previous prime is 555961961. The next prime is 555961993. The reversal of 555961968 is 869169555.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555961961) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 47905 + ... + 58367.

Almost surely, 2^555961968 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 555961968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (824259744).

555961968 is an abundant number, since it is smaller than the sum of its proper divisors (1092557520).

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

555961968 is a wasteful number, since it uses less digits than its factorization.

555961968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10524 (or 10509 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 54.

The square root of 555961968 is about 23578.8457732774. The cubic root of 555961968 is about 822.2711024372.

The spelling of 555961968 in words is "five hundred fifty-five million, nine hundred sixty-one thousand, nine hundred sixty-eight".