650221427 has 2 divisors, whose sum is σ = 650221428. Its totient is φ = 650221426.

The previous prime is 650221409. The next prime is 650221463. The reversal of 650221427 is 724122056.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-650221427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 650221427.

It is not a weakly prime, because it can be changed into another prime (650221487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325110713 + 325110714.

It is an arithmetic number, because the mean of its divisors is an integer number (325110714).

Almost surely, 2^650221427 is an apocalyptic number.

650221427 is a deficient number, since it is larger than the sum of its proper divisors (1).

650221427 is an equidigital number, since it uses as much as digits as its factorization.

650221427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 650221427 is about 25499.4397389433. The cubic root of 650221427 is about 866.3374576230.

The spelling of 650221427 in words is "six hundred fifty million, two hundred twenty-one thousand, four hundred twenty-seven".