648555854 has 8 divisors (see below), whose sum is σ = 975156840. Its totient is φ = 323503576.

The previous prime is 648555851. The next prime is 648555881. The reversal of 648555854 is 458555846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648555851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386129 + ... + 387804.

It is an arithmetic number, because the mean of its divisors is an integer number (121894605).

Almost surely, 2^648555854 is an apocalyptic number.

648555854 is a deficient number, since it is larger than the sum of its proper divisors (326600986).

648555854 is a wasteful number, since it uses less digits than its factorization.

648555854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774354.

The product of its digits is 3840000, while the sum is 50.

The square root of 648555854 is about 25466.7597860427. The cubic root of 648555854 is about 865.5971036273.

The spelling of 648555854 in words is "six hundred forty-eight million, five hundred fifty-five thousand, eight hundred fifty-four".