650297961 has 12 divisors (see below), whose sum is σ = 939700788. Its totient is φ = 433355904.

The previous prime is 650297951. The next prime is 650297981. The reversal of 650297961 is 169792056.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 642926736 + 7371225 = 25356^2 + 2715^2 .

It is not a de Polignac number, because 650297961 - 2⁶ = 650297897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (650297951) 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 in 11 ways as a sum of consecutive naturals, for example, 11101 + ... + 37733.

It is an arithmetic number, because the mean of its divisors is an integer number (78308399).

Almost surely, 2^650297961 is an apocalyptic number.

It is an amenable number.

650297961 is a deficient number, since it is larger than the sum of its proper divisors (289402827).

650297961 is a wasteful number, since it uses less digits than its factorization.

650297961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29352 (or 29349 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 650297961 is about 25500.9403944247. The cubic root of 650297961 is about 866.3714469006.

The spelling of 650297961 in words is "six hundred fifty million, two hundred ninety-seven thousand, nine hundred sixty-one".