67623889 has 2 divisors, whose sum is σ = 67623890. Its totient is φ = 67623888.

The previous prime is 67623863. The next prime is 67623931. The reversal of 67623889 is 98832676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50126400 + 17497489 = 7080^2 + 4183^2 .

It is a cyclic number.

It is not a de Polignac number, because 67623889 - 2⁷ = 67623761 is a prime.

It is not a weakly prime, because it can be changed into another prime (67623839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33811944 + 33811945.

It is an arithmetic number, because the mean of its divisors is an integer number (33811945).

Almost surely, 2^67623889 is an apocalyptic number.

It is an amenable number.

67623889 is a deficient number, since it is larger than the sum of its proper divisors (1).

67623889 is an equidigital number, since it uses as much as digits as its factorization.

67623889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 49.

The square root of 67623889 is about 8223.3745506331. The cubic root of 67623889 is about 407.4115913443.

The spelling of 67623889 in words is "sixty-seven million, six hundred twenty-three thousand, eight hundred eighty-nine".