648838895 has 16 divisors (see below), whose sum is σ = 806868000. Its totient is φ = 500293248.

The previous prime is 648838891. The next prime is 648838907. The reversal of 648838895 is 598838846.

It is a cyclic number.

It is not a de Polignac number, because 648838895 - 2² = 648838891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648838891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86141 + ... + 93369.

It is an arithmetic number, because the mean of its divisors is an integer number (50429250).

Almost surely, 2^648838895 is an apocalyptic number.

648838895 is a deficient number, since it is larger than the sum of its proper divisors (158029105).

648838895 is a wasteful number, since it uses less digits than its factorization.

648838895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7882.

The product of its digits is 13271040, while the sum is 59.

The square root of 648838895 is about 25472.3162472516. The cubic root of 648838895 is about 865.7230058331.

The spelling of 648838895 in words is "six hundred forty-eight million, eight hundred thirty-eight thousand, eight hundred ninety-five".