67430971 has 2 divisors, whose sum is σ = 67430972. Its totient is φ = 67430970.

The previous prime is 67430929. The next prime is 67431059. The reversal of 67430971 is 17903476.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67430971 - 2⁷ = 67430843 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67430971.

It is not a weakly prime, because it can be changed into another prime (67430171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33715485 + 33715486.

It is an arithmetic number, because the mean of its divisors is an integer number (33715486).

Almost surely, 2^67430971 is an apocalyptic number.

67430971 is a deficient number, since it is larger than the sum of its proper divisors (1).

67430971 is an equidigital number, since it uses as much as digits as its factorization.

67430971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 67430971 is about 8211.6363168372. The cubic root of 67430971 is about 407.0237999392.

The spelling of 67430971 in words is "sixty-seven million, four hundred thirty thousand, nine hundred seventy-one".