650289636 has 18 divisors (see below), whose sum is σ = 1643787782. Its totient is φ = 216763200.

The previous prime is 650289599. The next prime is 650289683. The reversal of 650289636 is 636982056.

It is a happy number.

650289636 is a `hidden beast` number, since 6 + 5 + 0 + 2 + 8 + 9 + 636 = 666.

It can be written as a sum of positive squares in only one way, i.e., 380016036 + 270273600 = 19494^2 + 16440^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×650289636² = 845753221378024992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 650289591 and 650289600.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 9031765 + ... + 9031836.

Almost surely, 2^650289636 is an apocalyptic number.

It is an amenable number.

650289636 is an abundant number, since it is smaller than the sum of its proper divisors (993498146).

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

650289636 is a wasteful number, since it uses less digits than its factorization.

650289636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18063611 (or 18063606 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 650289636 is about 25500.7771646277. Note that the first 3 decimals coincide. The cubic root of 650289636 is about 866.3677498399.

The spelling of 650289636 in words is "six hundred fifty million, two hundred eighty-nine thousand, six hundred thirty-six".