648317926 has 4 divisors (see below), whose sum is σ = 972476892. Its totient is φ = 324158962.

The previous prime is 648317909. The next prime is 648317983. The reversal of 648317926 is 629713846.

648317926 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×648317926² = 840632266345882952, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162079480 + ... + 162079483.

It is an arithmetic number, because the mean of its divisors is an integer number (243119223).

Almost surely, 2^648317926 is an apocalyptic number.

648317926 is a deficient number, since it is larger than the sum of its proper divisors (324158966).

648317926 is a wasteful number, since it uses less digits than its factorization.

648317926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324158965.

The product of its digits is 435456, while the sum is 46.

The square root of 648317926 is about 25462.0880133582. The cubic root of 648317926 is about 865.4912402303.

The spelling of 648317926 in words is "six hundred forty-eight million, three hundred seventeen thousand, nine hundred twenty-six".