67623643 has 2 divisors, whose sum is σ = 67623644. Its totient is φ = 67623642.

The previous prime is 67623593. The next prime is 67623659. The reversal of 67623643 is 34632676.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67623643 - 2¹⁷ = 67492571 is a prime.

It is not a weakly prime, because it can be changed into another prime (67623043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33811821 + 33811822.

It is an arithmetic number, because the mean of its divisors is an integer number (33811822).

Almost surely, 2^67623643 is an apocalyptic number.

67623643 is a deficient number, since it is larger than the sum of its proper divisors (1).

67623643 is an equidigital number, since it uses as much as digits as its factorization.

67623643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 37.

The square root of 67623643 is about 8223.3595932563. The cubic root of 67623643 is about 407.4110973208.

The spelling of 67623643 in words is "sixty-seven million, six hundred twenty-three thousand, six hundred forty-three".