67006129 has 4 divisors (see below), whose sum is σ = 70947684. Its totient is φ = 63064576.

The previous prime is 67006117. The next prime is 67006133. The reversal of 67006129 is 92160076.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46512400 + 20493729 = 6820^2 + 4527^2 .

It is a cyclic number.

It is not a de Polignac number, because 67006129 - 2¹¹ = 67004081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67006129.

It is not an unprimeable number, because it can be changed into a prime (67006109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1970752 + ... + 1970785.

It is an arithmetic number, because the mean of its divisors is an integer number (17736921).

Almost surely, 2^67006129 is an apocalyptic number.

It is an amenable number.

67006129 is a deficient number, since it is larger than the sum of its proper divisors (3941555).

67006129 is a wasteful number, since it uses less digits than its factorization.

67006129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3941554.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 67006129 is about 8185.7271515730. The cubic root of 67006129 is about 406.1671943576.

The spelling of 67006129 in words is "sixty-seven million, six thousand, one hundred twenty-nine".