648565846 has 4 divisors (see below), whose sum is σ = 972848772. Its totient is φ = 324282922.

The previous prime is 648565843. The next prime is 648565871.

648565846 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 648565793 and 648565802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648565843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162141460 + ... + 162141463.

It is an arithmetic number, because the mean of its divisors is an integer number (243212193).

Almost surely, 2^648565846 is an apocalyptic number.

648565846 is a deficient number, since it is larger than the sum of its proper divisors (324282926).

648565846 is a wasteful number, since it uses less digits than its factorization.

648565846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324282925.

The product of its digits is 5529600, while the sum is 52.

The square root of 648565846 is about 25466.9559625802. The cubic root of 648565846 is about 865.6015488892.

The spelling of 648565846 in words is "six hundred forty-eight million, five hundred sixty-five thousand, eight hundred forty-six".