650064997 has 4 divisors (see below), whose sum is σ = 656766796. Its totient is φ = 643363200.

The previous prime is 650064979. The next prime is 650065001. The reversal of 650064997 is 799460056.

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 441378081 + 208686916 = 21009^2 + 14446^2 .

It is a cyclic number.

It is not a de Polignac number, because 650064997 - 2⁷ = 650064869 is a prime.

It is a super-2 number, since 2×650064997² = 845169000649220018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650064907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3350754 + ... + 3350947.

It is an arithmetic number, because the mean of its divisors is an integer number (164191699).

Almost surely, 2^650064997 is an apocalyptic number.

It is an amenable number.

650064997 is a deficient number, since it is larger than the sum of its proper divisors (6701799).

650064997 is an equidigital number, since it uses as much as digits as its factorization.

650064997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6701798.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 650064997 is about 25496.3722321431. The cubic root of 650064997 is about 866.2679776827.

The spelling of 650064997 in words is "six hundred fifty million, sixty-four thousand, nine hundred ninety-seven".