648135574 has 16 divisors (see below), whose sum is σ = 1031649696. Its totient is φ = 304336000.

The previous prime is 648135563. The next prime is 648135583. The reversal of 648135574 is 475531846.

It is a self number, because there is not a number n which added to its sum of digits gives 648135574.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5002 + ... + 36349.

It is an arithmetic number, because the mean of its divisors is an integer number (64478106).

Almost surely, 2^648135574 is an apocalyptic number.

648135574 is a deficient number, since it is larger than the sum of its proper divisors (383514122).

648135574 is a wasteful number, since it uses less digits than its factorization.

648135574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41831.

The product of its digits is 403200, while the sum is 43.

The square root of 648135574 is about 25458.5069083008. The cubic root of 648135574 is about 865.4100872179.

The spelling of 648135574 in words is "six hundred forty-eight million, one hundred thirty-five thousand, five hundred seventy-four".