64826009 has 2 divisors, whose sum is σ = 64826010. Its totient is φ = 64826008.

The previous prime is 64825993. The next prime is 64826017. The reversal of 64826009 is 90062846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45859984 + 18966025 = 6772^2 + 4355^2 .

It is a cyclic number.

It is not a de Polignac number, because 64826009 - 2⁴ = 64825993 is a prime.

It is a super-2 number, since 2×64826009² = 8404822885736162, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64826009.

It is not a weakly prime, because it can be changed into another prime (64826089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32413004 + 32413005.

It is an arithmetic number, because the mean of its divisors is an integer number (32413005).

Almost surely, 2^64826009 is an apocalyptic number.

It is an amenable number.

64826009 is a deficient number, since it is larger than the sum of its proper divisors (1).

64826009 is an equidigital number, since it uses as much as digits as its factorization.

64826009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 64826009 is about 8051.4600539281. The cubic root of 64826009 is about 401.7135013846.

The spelling of 64826009 in words is "sixty-four million, eight hundred twenty-six thousand, nine".