64465650 has 36 divisors (see below), whose sum is σ = 173198922. Its totient is φ = 17190720.

The previous prime is 64465633. The next prime is 64465663. The reversal of 64465650 is 5656446.

It is a happy number.

64465650 is a `hidden beast` number, since 644 + 6 + 5 + 6 + 5 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 25190361 + 39275289 = 5019^2 + 6267^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 71179 + ... + 72078.

Almost surely, 2^64465650 is an apocalyptic number.

64465650 is an abundant number, since it is smaller than the sum of its proper divisors (108733272).

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

64465650 is a wasteful number, since it uses less digits than its factorization.

64465650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143275 (or 143267 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 64465650 is about 8029.0503797149. The cubic root of 64465650 is about 400.9677608756.

The spelling of 64465650 in words is "sixty-four million, four hundred sixty-five thousand, six hundred fifty".