67071057 has 8 divisors (see below), whose sum is σ = 89585376. Its totient is φ = 44635392.

The previous prime is 67071031. The next prime is 67071061. The reversal of 67071057 is 75017076.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 67071057 - 2⁷ = 67070929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67071157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17643 + ... + 21104.

It is an arithmetic number, because the mean of its divisors is an integer number (11198172).

Almost surely, 2^67071057 is an apocalyptic number.

It is an amenable number.

67071057 is a deficient number, since it is larger than the sum of its proper divisors (22514319).

67071057 is a wasteful number, since it uses less digits than its factorization.

67071057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39327.

The product of its (nonzero) digits is 10290, while the sum is 33.

The square root of 67071057 is about 8189.6921187551. The cubic root of 67071057 is about 406.2983421131.

The spelling of 67071057 in words is "sixty-seven million, seventy-one thousand, fifty-seven".