648875899 has 8 divisors (see below), whose sum is σ = 767144160. Its totient is φ = 537000576.

The previous prime is 648875879. The next prime is 648875939. The reversal of 648875899 is 998578846.

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

It is not a de Polignac number, because 648875899 - 2¹¹ = 648873851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 648875899.

It is not an unprimeable number, because it can be changed into a prime (648875809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1598014 + ... + 1598419.

It is an arithmetic number, because the mean of its divisors is an integer number (95893020).

Almost surely, 2^648875899 is an apocalyptic number.

648875899 is a deficient number, since it is larger than the sum of its proper divisors (118268261).

648875899 is a wasteful number, since it uses less digits than its factorization.

648875899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3196469.

The product of its digits is 34836480, while the sum is 64.

The square root of 648875899 is about 25473.0425940837. The cubic root of 648875899 is about 865.7394632338.

The spelling of 648875899 in words is "six hundred forty-eight million, eight hundred seventy-five thousand, eight hundred ninety-nine".