650530639 has 32 divisors (see below), whose sum is σ = 756993600. Its totient is φ = 553512960.

The previous prime is 650530609. The next prime is 650530681. The reversal of 650530639 is 936035056.

It is not a de Polignac number, because 650530639 - 2¹⁵ = 650497871 is a prime.

It is a super-2 number, since 2×650530639² = 846380224555496642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 650530598 and 650530607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650530609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1842687 + ... + 1843039.

It is an arithmetic number, because the mean of its divisors is an integer number (23656050).

Almost surely, 2^650530639 is an apocalyptic number.

650530639 is a deficient number, since it is larger than the sum of its proper divisors (106462961).

650530639 is a wasteful number, since it uses less digits than its factorization.

650530639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555.

The product of its (nonzero) digits is 72900, while the sum is 37.

The square root of 650530639 is about 25505.5021318930. The cubic root of 650530639 is about 866.4747644308.

The spelling of 650530639 in words is "six hundred fifty million, five hundred thirty thousand, six hundred thirty-nine".