67555601 has 2 divisors, whose sum is σ = 67555602. Its totient is φ = 67555600.

The previous prime is 67555573. The next prime is 67555633. The reversal of 67555601 is 10655576.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42315025 + 25240576 = 6505^2 + 5024^2 .

It is a cyclic number.

It is not a de Polignac number, because 67555601 - 2¹⁴ = 67539217 is a prime.

It is not a weakly prime, because it can be changed into another prime (67555651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33777800 + 33777801.

It is an arithmetic number, because the mean of its divisors is an integer number (33777801).

Almost surely, 2^67555601 is an apocalyptic number.

It is an amenable number.

67555601 is a deficient number, since it is larger than the sum of its proper divisors (1).

67555601 is an equidigital number, since it uses as much as digits as its factorization.

67555601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 67555601 is about 8219.2214351482. The cubic root of 67555601 is about 407.2744076101.

The spelling of 67555601 in words is "sixty-seven million, five hundred fifty-five thousand, six hundred one".