746322809 has 2 divisors, whose sum is σ = 746322810. Its totient is φ = 746322808.

The previous prime is 746322781. The next prime is 746322821. The reversal of 746322809 is 908223647.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 637057600 + 109265209 = 25240^2 + 10453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-746322809 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (746322509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373161404 + 373161405.

It is an arithmetic number, because the mean of its divisors is an integer number (373161405).

Almost surely, 2^746322809 is an apocalyptic number.

It is an amenable number.

746322809 is a deficient number, since it is larger than the sum of its proper divisors (1).

746322809 is an equidigital number, since it uses as much as digits as its factorization.

746322809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 746322809 is about 27318.9093669568. The cubic root of 746322809 is about 907.0729965031.

The spelling of 746322809 in words is "seven hundred forty-six million, three hundred twenty-two thousand, eight hundred nine".