650020557 has 4 divisors (see below), whose sum is σ = 866694080. Its totient is φ = 433347036.

The previous prime is 650020463. The next prime is 650020561. The reversal of 650020557 is 755020056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 650020557 - 2⁷ = 650020429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650020157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108336757 + ... + 108336762.

It is an arithmetic number, because the mean of its divisors is an integer number (216673520).

Almost surely, 2^650020557 is an apocalyptic number.

It is an amenable number.

650020557 is a deficient number, since it is larger than the sum of its proper divisors (216673523).

650020557 is a wasteful number, since it uses less digits than its factorization.

650020557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216673522.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 650020557 is about 25495.5007207154. The cubic root of 650020557 is about 866.2482371817.

The spelling of 650020557 in words is "six hundred fifty million, twenty thousand, five hundred fifty-seven".