650193640 has 16 divisors (see below), whose sum is σ = 1462935780. Its totient is φ = 260077440.

The previous prime is 650193613. The next prime is 650193667. The reversal of 650193640 is 46391056.

It is an interprime number because it is at equal distance from previous prime (650193613) and next prime (650193667).

It can be written as a sum of positive squares in 2 ways, for example, as 528356196 + 121837444 = 22986^2 + 11038^2 .

It is a junction number, because it is equal to n+sod(n) for n = 650193596 and 650193605.

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 3 ways as a sum of consecutive naturals, for example, 8127381 + ... + 8127460.

Almost surely, 2^650193640 is an apocalyptic number.

It is an amenable number.

650193640 is an abundant number, since it is smaller than the sum of its proper divisors (812742140).

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

650193640 is a wasteful number, since it uses less digits than its factorization.

650193640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16254852 (or 16254848 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 650193640 is about 25498.8948780138. The cubic root of 650193640 is about 866.3251165646.

The spelling of 650193640 in words is "six hundred fifty million, one hundred ninety-three thousand, six hundred forty".