67061429 has 2 divisors, whose sum is σ = 67061430. Its totient is φ = 67061428.

The previous prime is 67061359. The next prime is 67061479. The reversal of 67061429 is 92416076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45252529 + 21808900 = 6727^2 + 4670^2 .

It is a cyclic number.

It is not a de Polignac number, because 67061429 - 2⁸ = 67061173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67061479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33530714 + 33530715.

It is an arithmetic number, because the mean of its divisors is an integer number (33530715).

Almost surely, 2^67061429 is an apocalyptic number.

It is an amenable number.

67061429 is a deficient number, since it is larger than the sum of its proper divisors (1).

67061429 is an equidigital number, since it uses as much as digits as its factorization.

67061429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 67061429 is about 8189.1042855736. The cubic root of 67061429 is about 406.2788999086.

The spelling of 67061429 in words is "sixty-seven million, sixty-one thousand, four hundred twenty-nine".