650646097 has 4 divisors (see below), whose sum is σ = 666515556. Its totient is φ = 634776640.

The previous prime is 650646071. The next prime is 650646163. The reversal of 650646097 is 790646056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 277422336 + 373223761 = 16656^2 + 19319^2 .

It is a cyclic number.

It is not a de Polignac number, because 650646097 - 2⁷ = 650645969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (650646037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7934668 + ... + 7934749.

It is an arithmetic number, because the mean of its divisors is an integer number (166628889).

Almost surely, 2^650646097 is an apocalyptic number.

It is an amenable number.

650646097 is a deficient number, since it is larger than the sum of its proper divisors (15869459).

650646097 is a wasteful number, since it uses less digits than its factorization.

650646097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15869458.

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

The square root of 650646097 is about 25507.7654254543. The cubic root of 650646097 is about 866.5260228546.

The spelling of 650646097 in words is "six hundred fifty million, six hundred forty-six thousand, ninety-seven".