648600552 has 72 divisors (see below), whose sum is σ = 1836430050. Its totient is φ = 206788032.

The previous prime is 648600521. The next prime is 648600559. The reversal of 648600552 is 255006846.

648600552 is a `hidden beast` number, since 6 + 48 + 60 + 0 + 552 = 666.

It can be written as a sum of positive squares in only one way, i.e., 469415556 + 179184996 = 21666^2 + 13386^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (648600559) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 29574 + ... + 46602.

Almost surely, 2^648600552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648600552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (918215025).

648600552 is an abundant number, since it is smaller than the sum of its proper divisors (1187829498).

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

648600552 is a wasteful number, since it uses less digits than its factorization.

648600552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17087 (or 17057 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 648600552 is about 25467.6373462479. The cubic root of 648600552 is about 865.6169886124.

The spelling of 648600552 in words is "six hundred forty-eight million, six hundred thousand, five hundred fifty-two".