67445057 has 8 divisors (see below), whose sum is σ = 69737472. Its totient is φ = 65160000.

The previous prime is 67445051. The next prime is 67445071. The reversal of 67445057 is 75054476.

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

It is a cyclic number.

It is not a de Polignac number, because 67445057 - 2⁸ = 67444801 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 67445057.

It is not an unprimeable number, because it can be changed into a prime (67445051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21833 + ... + 24729.

It is an arithmetic number, because the mean of its divisors is an integer number (8717184).

Almost surely, 2^67445057 is an apocalyptic number.

It is an amenable number.

67445057 is a deficient number, since it is larger than the sum of its proper divisors (2292415).

67445057 is a wasteful number, since it uses less digits than its factorization.

67445057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3679.

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 67445057 is about 8212.4939573798. The cubic root of 67445057 is about 407.0521397262.

The spelling of 67445057 in words is "sixty-seven million, four hundred forty-five thousand, fifty-seven".