648541386 has 24 divisors (see below), whose sum is σ = 1428211044. Its totient is φ = 212636160.

The previous prime is 648541379. The next prime is 648541429. The reversal of 648541386 is 683145846.

It can be written as a sum of positive squares in 2 ways, for example, as 502880625 + 145660761 = 22425^2 + 12069^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 294231 + ... + 296426.

Almost surely, 2^648541386 is an apocalyptic number.

648541386 is an abundant number, since it is smaller than the sum of its proper divisors (779669658).

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

648541386 is a wasteful number, since it uses less digits than its factorization.

648541386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590726 (or 590723 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 648541386 is about 25466.4757279055. The cubic root of 648541386 is about 865.5906669923.

The spelling of 648541386 in words is "six hundred forty-eight million, five hundred forty-one thousand, three hundred eighty-six".