67276409 has 2 divisors, whose sum is σ = 67276410. Its totient is φ = 67276408.

The previous prime is 67276399. The next prime is 67276423. The reversal of 67276409 is 90467276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48958009 + 18318400 = 6997^2 + 4280^2 .

It is a cyclic number.

It is not a de Polignac number, because 67276409 - 2⁴ = 67276393 is a prime.

It is a super-3 number, since 3×67276409³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67276459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33638204 + 33638205.

It is an arithmetic number, because the mean of its divisors is an integer number (33638205).

Almost surely, 2^67276409 is an apocalyptic number.

It is an amenable number.

67276409 is a deficient number, since it is larger than the sum of its proper divisors (1).

67276409 is an equidigital number, since it uses as much as digits as its factorization.

67276409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 67276409 is about 8202.2197605282. The cubic root of 67276409 is about 406.7125752914.

The spelling of 67276409 in words is "sixty-seven million, two hundred seventy-six thousand, four hundred nine".