649473552 has 200 divisors, whose sum is σ = 2313976896. Its totient is φ = 171258624.

The previous prime is 649473547. The next prime is 649473553. The reversal of 649473552 is 255374946.

649473552 is a `hidden beast` number, since 6 + 4 + 94 + 7 + 3 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 649473498 and 649473507.

It is not an unprimeable number, because it can be changed into a prime (649473553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 115183 + ... + 120689.

Almost surely, 2^649473552 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 649473552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1156988448).

649473552 is an abundant number, since it is smaller than the sum of its proper divisors (1664503344).

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

649473552 is a wasteful number, since it uses less digits than its factorization.

649473552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5547 (or 5532 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The square root of 649473552 is about 25484.7709819021. The cubic root of 649473552 is about 866.0051807174.

The spelling of 649473552 in words is "six hundred forty-nine million, four hundred seventy-three thousand, five hundred fifty-two".