664269050 has 24 divisors (see below), whose sum is σ = 1308220956. Its totient is φ = 250077440.

The previous prime is 664269043. The next prime is 664269059. The reversal of 664269050 is 50962466.

It can be written as a sum of positive squares in 6 ways, for example, as 509540329 + 154728721 = 22573^2 + 12439^2 .

It is a junction number, because it is equal to n+sod(n) for n = 664268995 and 664269013.

It is not an unprimeable number, because it can be changed into a prime (664269059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 389897 + ... + 391596.

Almost surely, 2^664269050 is an apocalyptic number.

664269050 is a deficient number, since it is larger than the sum of its proper divisors (643951906).

664269050 is a wasteful number, since it uses less digits than its factorization.

664269050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781522 (or 781517 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 664269050 is about 25773.4175071914. The cubic root of 664269050 is about 872.5319512222.

The spelling of 664269050 in words is "six hundred sixty-four million, two hundred sixty-nine thousand, fifty".