648819862 has 16 divisors (see below), whose sum is σ = 996633792. Its totient is φ = 316620360.

The previous prime is 648819781. The next prime is 648819917. The reversal of 648819862 is 268918846.

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, 164113 + ... + 168019.

It is an arithmetic number, because the mean of its divisors is an integer number (62289612).

Almost surely, 2^648819862 is an apocalyptic number.

648819862 is a deficient number, since it is larger than the sum of its proper divisors (347813930).

648819862 is a wasteful number, since it uses less digits than its factorization.

648819862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5883.

The product of its digits is 1327104, while the sum is 52.

The square root of 648819862 is about 25471.9426428374. The cubic root of 648819862 is about 865.7145407286.

The spelling of 648819862 in words is "six hundred forty-eight million, eight hundred nineteen thousand, eight hundred sixty-two".