648511026 has 8 divisors (see below), whose sum is σ = 1297022064. Its totient is φ = 216170340.

The previous prime is 648511007. The next prime is 648511037. The reversal of 648511026 is 620115846.

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

648511026 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54042580 + ... + 54042591.

It is an arithmetic number, because the mean of its divisors is an integer number (162127758).

Almost surely, 2^648511026 is an apocalyptic number.

648511026 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648511026 is a wasteful number, since it uses less digits than its factorization.

648511026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108085176.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 648511026 is about 25465.8796431617. The cubic root of 648511026 is about 865.5771598909.

The spelling of 648511026 in words is "six hundred forty-eight million, five hundred eleven thousand, twenty-six".