67930381 has 2 divisors, whose sum is σ = 67930382. Its totient is φ = 67930380.

The previous prime is 67930363. The next prime is 67930391. The reversal of 67930381 is 18303976.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63457156 + 4473225 = 7966^2 + 2115^2 .

It is a cyclic number.

It is not a de Polignac number, because 67930381 - 2¹³ = 67922189 is a prime.

It is a super-2 number, since 2×67930381² = 9229073325610322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67930381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67930391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33965190 + 33965191.

It is an arithmetic number, because the mean of its divisors is an integer number (33965191).

Almost surely, 2^67930381 is an apocalyptic number.

It is an amenable number.

67930381 is a deficient number, since it is larger than the sum of its proper divisors (1).

67930381 is an equidigital number, since it uses as much as digits as its factorization.

67930381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 67930381 is about 8241.9888983182. The cubic root of 67930381 is about 408.0261681441.

The spelling of 67930381 in words is "sixty-seven million, nine hundred thirty thousand, three hundred eighty-one".