650742961 has 12 divisors (see below), whose sum is σ = 715983156. Its totient is φ = 591002720.

The previous prime is 650742959. The next prime is 650742973. The reversal of 650742961 is 169247056.

It can be written as a sum of positive squares in 2 ways, for example, as 601181361 + 49561600 = 24519^2 + 7040^2 .

It is not a de Polignac number, because 650742961 - 2¹ = 650742959 is a prime.

It is a super-3 number, since 3×650742961³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (650742941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164175 + ... + 168091.

It is an arithmetic number, because the mean of its divisors is an integer number (59665263).

Almost surely, 2^650742961 is an apocalyptic number.

It is an amenable number.

650742961 is a deficient number, since it is larger than the sum of its proper divisors (65240195).

650742961 is a wasteful number, since it uses less digits than its factorization.

650742961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5312 (or 5301 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 650742961 is about 25509.6640707007. The cubic root of 650742961 is about 866.5690216584.

The spelling of 650742961 in words is "six hundred fifty million, seven hundred forty-two thousand, nine hundred sixty-one".