650128137 has 16 divisors (see below), whose sum is σ = 888180480. Its totient is φ = 422774352.

The previous prime is 650128109. The next prime is 650128151. The reversal of 650128137 is 731821056.

It is not a de Polignac number, because 650128137 - 2¹⁰ = 650127113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 650128098 and 650128107.

It is not an unprimeable number, because it can be changed into a prime (650128337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107878 + ... + 113744.

It is an arithmetic number, because the mean of its divisors is an integer number (55511280).

Almost surely, 2^650128137 is an apocalyptic number.

It is an amenable number.

650128137 is a deficient number, since it is larger than the sum of its proper divisors (238052343).

650128137 is a wasteful number, since it uses less digits than its factorization.

650128137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6772.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 650128137 is about 25497.6104174489. The cubic root of 650128137 is about 866.2960232831.

The spelling of 650128137 in words is "six hundred fifty million, one hundred twenty-eight thousand, one hundred thirty-seven".