650840971 has 12 divisors (see below), whose sum is σ = 757471176. Its totient is φ = 556867520.

The previous prime is 650840941. The next prime is 650840999. The reversal of 650840971 is 179048056.

650840971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-650840971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (650840941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156145 + ... + 160258.

It is an arithmetic number, because the mean of its divisors is an integer number (63122598).

Almost surely, 2^650840971 is an apocalyptic number.

650840971 is a deficient number, since it is larger than the sum of its proper divisors (106630205).

650840971 is a wasteful number, since it uses less digits than its factorization.

650840971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316442 (or 316431 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 650840971 is about 25511.5850350385. The cubic root of 650840971 is about 866.6125248393.

The spelling of 650840971 in words is "six hundred fifty million, eight hundred forty thousand, nine hundred seventy-one".