650672657 has 2 divisors, whose sum is σ = 650672658. Its totient is φ = 650672656.

The previous prime is 650672629. The next prime is 650672663. The reversal of 650672657 is 756276056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 646990096 + 3682561 = 25436^2 + 1919^2 .

It is a cyclic number.

It is not a de Polignac number, because 650672657 - 2²⁴ = 633895441 is a prime.

It is not a weakly prime, because it can be changed into another prime (650672357) 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, 325336328 + 325336329.

It is an arithmetic number, because the mean of its divisors is an integer number (325336329).

Almost surely, 2^650672657 is an apocalyptic number.

It is an amenable number.

650672657 is a deficient number, since it is larger than the sum of its proper divisors (1).

650672657 is an equidigital number, since it uses as much as digits as its factorization.

650672657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 44.

The square root of 650672657 is about 25508.2860459107. The cubic root of 650672657 is about 866.5378135029.

The spelling of 650672657 in words is "six hundred fifty million, six hundred seventy-two thousand, six hundred fifty-seven".