543940660 has 24 divisors (see below), whose sum is σ = 1161003816. Its totient is φ = 214008960.

The previous prime is 543940633. The next prime is 543940667. The reversal of 543940660 is 66049345.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6906384 + 537034276 = 2628^2 + 23174^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543940667) 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, 221707 + ... + 224146.

It is an arithmetic number, because the mean of its divisors is an integer number (48375159).

Almost surely, 2^543940660 is an apocalyptic number.

It is an amenable number.

543940660 is an abundant number, since it is smaller than the sum of its proper divisors (617063156).

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

543940660 is a wasteful number, since it uses less digits than its factorization.

543940660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445923 (or 445921 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 543940660 is about 23322.5354539338. The cubic root of 543940660 is about 816.3013372682.

The spelling of 543940660 in words is "five hundred forty-three million, nine hundred forty thousand, six hundred sixty".