650989071 has 24 divisors (see below), whose sum is σ = 974376000. Its totient is φ = 418324032.

The previous prime is 650989049. The next prime is 650989081. The reversal of 650989071 is 170989056.

It is not a de Polignac number, because 650989071 - 2¹⁸ = 650726927 is a prime.

It is a super-2 number, since 2×650989071² = 847573541122886082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650989081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 185925 + ... + 189393.

It is an arithmetic number, because the mean of its divisors is an integer number (40599000).

Almost surely, 2^650989071 is an apocalyptic number.

650989071 is a deficient number, since it is larger than the sum of its proper divisors (323386929).

650989071 is a wasteful number, since it uses less digits than its factorization.

650989071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4223 (or 4220 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 650989071 is about 25514.4874728065. The cubic root of 650989071 is about 866.6782529187.

The spelling of 650989071 in words is "six hundred fifty million, nine hundred eighty-nine thousand, seventy-one".