72271067 has 4 divisors (see below), whose sum is σ = 78841176. Its totient is φ = 65700960.

The previous prime is 72271057. The next prime is 72271081. The reversal of 72271067 is 76017227.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 72271067 - 2⁴ = 72271051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72271057) 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, 3285038 + ... + 3285059.

It is an arithmetic number, because the mean of its divisors is an integer number (19710294).

Almost surely, 2^72271067 is an apocalyptic number.

72271067 is a deficient number, since it is larger than the sum of its proper divisors (6570109).

72271067 is a wasteful number, since it uses less digits than its factorization.

72271067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6570108.

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 72271067 is about 8501.2391449717. The cubic root of 72271067 is about 416.5381868049.

The spelling of 72271067 in words is "seventy-two million, two hundred seventy-one thousand, sixty-seven".