648384542 has 16 divisors (see below), whose sum is σ = 1052096640. Its totient is φ = 297909792.

The previous prime is 648384533. The next prime is 648384547. The reversal of 648384542 is 245483846.

It is a junction number, because it is equal to n+sod(n) for n = 648384493 and 648384502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648384547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50117 + ... + 61712.

It is an arithmetic number, because the mean of its divisors is an integer number (65756040).

Almost surely, 2^648384542 is an apocalyptic number.

648384542 is a deficient number, since it is larger than the sum of its proper divisors (403712098).

648384542 is a wasteful number, since it uses less digits than its factorization.

648384542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112067.

The product of its digits is 737280, while the sum is 44.

The square root of 648384542 is about 25463.3961207063. The cubic root of 648384542 is about 865.5208828832.

The spelling of 648384542 in words is "six hundred forty-eight million, three hundred eighty-four thousand, five hundred forty-two".