67838923 has 2 divisors, whose sum is σ = 67838924. Its totient is φ = 67838922.

The previous prime is 67838899. The next prime is 67838929. The reversal of 67838923 is 32983876.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67838923 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (67838929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33919461 + 33919462.

It is an arithmetic number, because the mean of its divisors is an integer number (33919462).

Almost surely, 2^67838923 is an apocalyptic number.

67838923 is a deficient number, since it is larger than the sum of its proper divisors (1).

67838923 is an equidigital number, since it uses as much as digits as its factorization.

67838923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 46.

The square root of 67838923 is about 8236.4387328505. The cubic root of 67838923 is about 407.8429706968.

It can be divided in two parts, 678 and 38923, that added together give a square (39601 = 199²).

The spelling of 67838923 in words is "sixty-seven million, eight hundred thirty-eight thousand, nine hundred twenty-three".