664816050 has 36 divisors (see below), whose sum is σ = 1786140330. Its totient is φ = 177284160.

The previous prime is 664816043. The next prime is 664816051. The reversal of 664816050 is 50618466.

664816050 is a `hidden beast` number, since 6 + 6 + 48 + 1 + 605 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 541539441 + 123276609 = 23271^2 + 11103^2 .

It is a junction number, because it is equal to n+sod(n) for n = 664815996 and 664816014.

It is not an unprimeable number, because it can be changed into a prime (664816051) 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 17 ways as a sum of consecutive naturals, for example, 738235 + ... + 739134.

Almost surely, 2^664816050 is an apocalyptic number.

664816050 is an abundant number, since it is smaller than the sum of its proper divisors (1121324280).

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

664816050 is a wasteful number, since it uses less digits than its factorization.

664816050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477387 (or 1477379 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 664816050 is about 25784.0270322539. The cubic root of 664816050 is about 872.7713843411.

The spelling of 664816050 in words is "six hundred sixty-four million, eight hundred sixteen thousand, fifty".