650407065 has 48 divisors (see below), whose sum is σ = 1307289984. Its totient is φ = 270293760.

The previous prime is 650407057. The next prime is 650407117. The reversal of 650407065 is 560704056.

It is not a de Polignac number, because 650407065 - 2³ = 650407057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12892 + ... + 38301.

It is an arithmetic number, because the mean of its divisors is an integer number (27235208).

Almost surely, 2^650407065 is an apocalyptic number.

It is an amenable number.

650407065 is an abundant number, since it is smaller than the sum of its proper divisors (656882919).

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

650407065 is a wasteful number, since it uses less digits than its factorization.

650407065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51230 (or 51219 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 650407065 is about 25503.0795199325. The cubic root of 650407065 is about 866.4198961296.

Adding to 650407065 its reverse (560704056), we get a palindrome (1211111121).

The spelling of 650407065 in words is "six hundred fifty million, four hundred seven thousand, sixty-five".