651289 has 2 divisors, whose sum is σ = 651290. Its totient is φ = 651288.

The previous prime is 651281. The next prime is 651293. The reversal of 651289 is 982156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 627264 + 24025 = 792^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 651289 - 2³ = 651281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 651289.

It is not a weakly prime, because it can be changed into another prime (651281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325644 + 325645.

It is an arithmetic number, because the mean of its divisors is an integer number (325645).

2⁶⁵¹²⁸⁹ is an apocalyptic number.

It is an amenable number.

651289 is a deficient number, since it is larger than the sum of its proper divisors (1).

651289 is an equidigital number, since it uses as much as digits as its factorization.

651289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 31.

The square root of 651289 is about 807.0247827669. The cubic root of 651289 is about 86.6811333510.

The spelling of 651289 in words is "six hundred fifty-one thousand, two hundred eighty-nine".