647580542 has 16 divisors (see below), whose sum is σ = 1110471552. Its totient is φ = 277451160.

The previous prime is 647580509. The next prime is 647580547. The reversal of 647580542 is 245085746.

It is a self number, because there is not a number n which added to its sum of digits gives 647580542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647580547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73253 + ... + 81615.

It is an arithmetic number, because the mean of its divisors is an integer number (69404472).

Almost surely, 2^647580542 is an apocalyptic number.

647580542 is a deficient number, since it is larger than the sum of its proper divisors (462891010).

647580542 is a wasteful number, since it uses less digits than its factorization.

647580542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13903.

The product of its (nonzero) digits is 268800, while the sum is 41.

The square root of 647580542 is about 25447.6038557661. The cubic root of 647580542 is about 865.1629848695.

The spelling of 647580542 in words is "six hundred forty-seven million, five hundred eighty thousand, five hundred forty-two".