67938751 has 2 divisors, whose sum is σ = 67938752. Its totient is φ = 67938750.

The previous prime is 67938709. The next prime is 67938769. The reversal of 67938751 is 15783976.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67938751 - 2¹¹ = 67936703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67938781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33969375 + 33969376.

It is an arithmetic number, because the mean of its divisors is an integer number (33969376).

Almost surely, 2^67938751 is an apocalyptic number.

67938751 is a deficient number, since it is larger than the sum of its proper divisors (1).

67938751 is an equidigital number, since it uses as much as digits as its factorization.

67938751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 46.

The square root of 67938751 is about 8242.4966484676. The cubic root of 67938751 is about 408.0429256868.

The spelling of 67938751 in words is "sixty-seven million, nine hundred thirty-eight thousand, seven hundred fifty-one".