647332542 has 24 divisors (see below), whose sum is σ = 1426328280. Its totient is φ = 212119920.

The previous prime is 647332531. The next prime is 647332571. The reversal of 647332542 is 245233746.

647332542 is a `hidden beast` number, since 647 + 3 + 3 + 2 + 5 + 4 + 2 = 666.

647332542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 647332497 and 647332506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 303709 + ... + 305832.

It is an arithmetic number, because the mean of its divisors is an integer number (59430345).

Almost surely, 2^647332542 is an apocalyptic number.

647332542 is an abundant number, since it is smaller than the sum of its proper divisors (778995738).

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

647332542 is a wasteful number, since it uses less digits than its factorization.

647332542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609608 (or 609605 counting only the distinct ones).

The product of its digits is 120960, while the sum is 36.

The square root of 647332542 is about 25442.7306317541. The cubic root of 647332542 is about 865.0525286910.

The spelling of 647332542 in words is "six hundred forty-seven million, three hundred thirty-two thousand, five hundred forty-two".