648355630 has 16 divisors (see below), whose sum is σ = 1256812704. Its totient is φ = 239392800.

The previous prime is 648355627. The next prime is 648355633. The reversal of 648355630 is 36553846.

It is an interprime number because it is at equal distance from previous prime (648355627) and next prime (648355633).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648355633) 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, 2493546 + ... + 2493805.

It is an arithmetic number, because the mean of its divisors is an integer number (78550794).

Almost surely, 2^648355630 is an apocalyptic number.

648355630 is a deficient number, since it is larger than the sum of its proper divisors (608457074).

648355630 is a wasteful number, since it uses less digits than its factorization.

648355630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4987371.

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 648355630 is about 25462.8283974895. The cubic root of 648355630 is about 865.5080179293.

The spelling of 648355630 in words is "six hundred forty-eight million, three hundred fifty-five thousand, six hundred thirty".