67663601 has 2 divisors, whose sum is σ = 67663602. Its totient is φ = 67663600.

The previous prime is 67663567. The next prime is 67663613. The reversal of 67663601 is 10636676.

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., 37149025 + 30514576 = 6095^2 + 5524^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67663601 is a prime.

It is not a weakly prime, because it can be changed into another prime (67663681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33831800 + 33831801.

It is an arithmetic number, because the mean of its divisors is an integer number (33831801).

Almost surely, 2^67663601 is an apocalyptic number.

It is an amenable number.

67663601 is a deficient number, since it is larger than the sum of its proper divisors (1).

67663601 is an equidigital number, since it uses as much as digits as its factorization.

67663601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 67663601 is about 8225.7887767679. The cubic root of 67663601 is about 407.4913262986.

The spelling of 67663601 in words is "sixty-seven million, six hundred sixty-three thousand, six hundred one".