650565066 has 16 divisors (see below), whose sum is σ = 1302208704. Its totient is φ = 216675264.

The previous prime is 650565059. The next prime is 650565067. The reversal of 650565066 is 660565056.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (650565067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36991 + ... + 51666.

It is an arithmetic number, because the mean of its divisors is an integer number (81388044).

Almost surely, 2^650565066 is an apocalyptic number.

650565066 is an abundant number, since it is smaller than the sum of its proper divisors (651643638).

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

650565066 is a wasteful number, since it uses less digits than its factorization.

650565066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89885.

The product of its (nonzero) digits is 162000, while the sum is 39.

The square root of 650565066 is about 25506.1770165582. The cubic root of 650565066 is about 866.4900491839.

The spelling of 650565066 in words is "six hundred fifty million, five hundred sixty-five thousand, sixty-six".