651068441 has 2 divisors, whose sum is σ = 651068442. Its totient is φ = 651068440.

The previous prime is 651068423. The next prime is 651068443. The reversal of 651068441 is 144860156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 603734041 + 47334400 = 24571^2 + 6880^2 .

It is a cyclic number.

It is not a de Polignac number, because 651068441 - 2¹⁴ = 651052057 is a prime.

It is a super-2 number, since 2×651068441² = 847780229732340962, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 651068443, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (651068443) 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, 325534220 + 325534221.

It is an arithmetic number, because the mean of its divisors is an integer number (325534221).

Almost surely, 2^651068441 is an apocalyptic number.

It is an amenable number.

651068441 is a deficient number, since it is larger than the sum of its proper divisors (1).

651068441 is an equidigital number, since it uses as much as digits as its factorization.

651068441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 651068441 is about 25516.0428162362. The cubic root of 651068441 is about 866.7134739184.

The spelling of 651068441 in words is "six hundred fifty-one million, sixty-eight thousand, four hundred forty-one".