648505846 has 4 divisors (see below), whose sum is σ = 972758772. Its totient is φ = 324252922.

The previous prime is 648505843. The next prime is 648505877.

648505846 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 = 648505796 and 648505805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648505843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162126460 + ... + 162126463.

It is an arithmetic number, because the mean of its divisors is an integer number (243189693).

Almost surely, 2^648505846 is an apocalyptic number.

648505846 is a deficient number, since it is larger than the sum of its proper divisors (324252926).

648505846 is a wasteful number, since it uses less digits than its factorization.

648505846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324252925.

The product of its (nonzero) digits is 921600, while the sum is 46.

The square root of 648505846 is about 25465.7779382449. Note that the first 3 decimals coincide. The cubic root of 648505846 is about 865.5748552775.

The spelling of 648505846 in words is "six hundred forty-eight million, five hundred five thousand, eight hundred forty-six".