650651121 has 12 divisors (see below), whose sum is σ = 940193280. Its totient is φ = 433599480.

The previous prime is 650651107. The next prime is 650651147. The reversal of 650651121 is 121156056.

It is a happy number.

650651121 is a `hidden beast` number, since 6 + 5 + 0 + 651 + 1 + 2 + 1 = 666.

It is not a de Polignac number, because 650651121 - 2¹⁴ = 650634737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (650651101) 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, 13356 + ... + 38466.

It is an arithmetic number, because the mean of its divisors is an integer number (78349440).

Almost surely, 2^650651121 is an apocalyptic number.

It is an amenable number.

650651121 is a deficient number, since it is larger than the sum of its proper divisors (289542159).

650651121 is a wasteful number, since it uses less digits than its factorization.

650651121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27996 (or 27993 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 650651121 is about 25507.8639050784. The cubic root of 650651121 is about 866.5282531584.

The spelling of 650651121 in words is "six hundred fifty million, six hundred fifty-one thousand, one hundred twenty-one".