650605601 has 2 divisors, whose sum is σ = 650605602. Its totient is φ = 650605600.

The previous prime is 650605597. The next prime is 650605603. The reversal of 650605601 is 106506056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 421234576 + 229371025 = 20524^2 + 15145^2 .

It is a cyclic number.

It is not a de Polignac number, because 650605601 - 2² = 650605597 is a prime.

Together with 650605603, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (650605603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325302800 + 325302801.

It is an arithmetic number, because the mean of its divisors is an integer number (325302801).

Almost surely, 2^650605601 is an apocalyptic number.

It is an amenable number.

650605601 is a deficient number, since it is larger than the sum of its proper divisors (1).

650605601 is an equidigital number, since it uses as much as digits as its factorization.

650605601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 650605601 is about 25506.9716156191. The cubic root of 650605601 is about 866.5080450496.

The spelling of 650605601 in words is "six hundred fifty million, six hundred five thousand, six hundred one".