539466640 has 20 divisors (see below), whose sum is σ = 1254260124. Its totient is φ = 215786624.

The previous prime is 539466617. The next prime is 539466649. The reversal of 539466640 is 46664935.

539466640 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 317694976 + 221771664 = 17824^2 + 14892^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (539466649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3371587 + ... + 3371746.

Almost surely, 2^539466640 is an apocalyptic number.

It is an amenable number.

539466640 is an abundant number, since it is smaller than the sum of its proper divisors (714793484).

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

539466640 is a wasteful number, since it uses less digits than its factorization.

539466640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6743346 (or 6743340 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 43.

The square root of 539466640 is about 23226.4211621162. The cubic root of 539466640 is about 814.0570926276.

The spelling of 539466640 in words is "five hundred thirty-nine million, four hundred sixty-six thousand, six hundred forty".