648956506 has 16 divisors (see below), whose sum is σ = 1077780960. Its totient is φ = 290576880.

The previous prime is 648956471. The next prime is 648956509. The reversal of 648956506 is 605659846.

It is a happy number.

648956506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×648956506² = 842289093359456072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 648956506.

It is not an unprimeable number, because it can be changed into a prime (648956509) 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, 218661 + ... + 221608.

It is an arithmetic number, because the mean of its divisors is an integer number (67361310).

Almost surely, 2^648956506 is an apocalyptic number.

648956506 is a deficient number, since it is larger than the sum of its proper divisors (428824454).

648956506 is a wasteful number, since it uses less digits than its factorization.

648956506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440349.

The product of its (nonzero) digits is 1555200, while the sum is 49.

The square root of 648956506 is about 25474.6247469909. The cubic root of 648956506 is about 865.7753107518.

The spelling of 648956506 in words is "six hundred forty-eight million, nine hundred fifty-six thousand, five hundred six".