650723893 has 2 divisors, whose sum is σ = 650723894. Its totient is φ = 650723892.

The previous prime is 650723863. The next prime is 650723903. The reversal of 650723893 is 398327056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402283249 + 248440644 = 20057^2 + 15762^2 .

It is a cyclic number.

It is not a de Polignac number, because 650723893 - 2⁵ = 650723861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (650723863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325361946 + 325361947.

It is an arithmetic number, because the mean of its divisors is an integer number (325361947).

Almost surely, 2^650723893 is an apocalyptic number.

It is an amenable number.

650723893 is a deficient number, since it is larger than the sum of its proper divisors (1).

650723893 is an equidigital number, since it uses as much as digits as its factorization.

650723893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 650723893 is about 25509.2903272514. The cubic root of 650723893 is about 866.5605575385.

The spelling of 650723893 in words is "six hundred fifty million, seven hundred twenty-three thousand, eight hundred ninety-three".