67889743 has 2 divisors, whose sum is σ = 67889744. Its totient is φ = 67889742.

The previous prime is 67889741. The next prime is 67889749. The reversal of 67889743 is 34798876.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67889743 - 2¹ = 67889741 is a prime.

Together with 67889741, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67889741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33944871 + 33944872.

It is an arithmetic number, because the mean of its divisors is an integer number (33944872).

Almost surely, 2^67889743 is an apocalyptic number.

67889743 is a deficient number, since it is larger than the sum of its proper divisors (1).

67889743 is an equidigital number, since it uses as much as digits as its factorization.

67889743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 52.

The square root of 67889743 is about 8239.5232264980. The cubic root of 67889743 is about 407.9447873993.

The spelling of 67889743 in words is "sixty-seven million, eight hundred eighty-nine thousand, seven hundred forty-three".