71445067 has 16 divisors (see below), whose sum is σ = 78675840. Its totient is φ = 64576512.

The previous prime is 71445043. The next prime is 71445071. The reversal of 71445067 is 76054417.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 71445067 - 2⁷ = 71444939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71445037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154078 + ... + 154540.

It is an arithmetic number, because the mean of its divisors is an integer number (4917240).

Almost surely, 2^71445067 is an apocalyptic number.

71445067 is a deficient number, since it is larger than the sum of its proper divisors (7230773).

71445067 is a wasteful number, since it uses less digits than its factorization.

71445067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 71445067 is about 8452.5183821155. The cubic root of 71445067 is about 414.9452039714.

The spelling of 71445067 in words is "seventy-one million, four hundred forty-five thousand, sixty-seven".