67742863 has 2 divisors, whose sum is σ = 67742864. Its totient is φ = 67742862.

The previous prime is 67742861. The next prime is 67742867. The reversal of 67742863 is 36824776.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67742863 - 2¹ = 67742861 is a prime.

Together with 67742861, 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 (67742861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33871431 + 33871432.

It is an arithmetic number, because the mean of its divisors is an integer number (33871432).

Almost surely, 2^67742863 is an apocalyptic number.

67742863 is a deficient number, since it is larger than the sum of its proper divisors (1).

67742863 is an equidigital number, since it uses as much as digits as its factorization.

67742863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 43.

The square root of 67742863 is about 8230.6052632841. The cubic root of 67742863 is about 407.6503777117.

The spelling of 67742863 in words is "sixty-seven million, seven hundred forty-two thousand, eight hundred sixty-three".