648525624 has 16 divisors (see below), whose sum is σ = 1621314120. Its totient is φ = 216175200.

The previous prime is 648525623. The next prime is 648525643. The reversal of 648525624 is 426525846.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648525623) by changing a digit.

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, 13510927 + ... + 13510974.

Almost surely, 2^648525624 is an apocalyptic number.

It is an amenable number.

648525624 is an abundant number, since it is smaller than the sum of its proper divisors (972788496).

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

648525624 is a wasteful number, since it uses less digits than its factorization.

648525624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27021910 (or 27021906 counting only the distinct ones).

The product of its digits is 460800, while the sum is 42.

The square root of 648525624 is about 25466.1662603541. The cubic root of 648525624 is about 865.5836545636.

The spelling of 648525624 in words is "six hundred forty-eight million, five hundred twenty-five thousand, six hundred twenty-four".