65323009 has 4 divisors (see below), whose sum is σ = 66393940. Its totient is φ = 64252080.

The previous prime is 65322989. The next prime is 65323031. The reversal of 65323009 is 90032356.

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 874225 + 64448784 = 935^2 + 8028^2 .

It is a cyclic number.

It is not a de Polignac number, because 65323009 - 2¹¹ = 65320961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65323039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535374 + ... + 535495.

It is an arithmetic number, because the mean of its divisors is an integer number (16598485).

It is a Proth number, since it is equal to 3987 ⋅ 2¹⁴ + 1 and 3987 < 2¹⁴.

Almost surely, 2^65323009 is an apocalyptic number.

It is an amenable number.

65323009 is a deficient number, since it is larger than the sum of its proper divisors (1070931).

65323009 is a wasteful number, since it uses less digits than its factorization.

65323009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070930.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 65323009 is about 8082.2650909259. The cubic root of 65323009 is about 402.7374913643.

The spelling of 65323009 in words is "sixty-five million, three hundred twenty-three thousand, nine".