72270067 has 4 divisors (see below), whose sum is σ = 73807776. Its totient is φ = 70732360.

The previous prime is 72270061. The next prime is 72270097. The reversal of 72270067 is 76007227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76007227 = 347 ⋅219041.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72270067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72270061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 768784 + ... + 768877.

It is an arithmetic number, because the mean of its divisors is an integer number (18451944).

Almost surely, 2^72270067 is an apocalyptic number.

72270067 is a deficient number, since it is larger than the sum of its proper divisors (1537709).

72270067 is a wasteful number, since it uses less digits than its factorization.

72270067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537708.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 72270067 is about 8501.1803298130. The cubic root of 72270067 is about 416.5362656114.

The spelling of 72270067 in words is "seventy-two million, two hundred seventy thousand, sixty-seven".