72441667 has 4 divisors (see below), whose sum is σ = 72660856. Its totient is φ = 72222480.

The previous prime is 72441643. The next prime is 72441679. The reversal of 72441667 is 76614427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76614427 = 17 ⋅4506731.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72441667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72441367) 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, 109098 + ... + 109759.

It is an arithmetic number, because the mean of its divisors is an integer number (18165214).

Almost surely, 2^72441667 is an apocalyptic number.

72441667 is a deficient number, since it is larger than the sum of its proper divisors (219189).

72441667 is a wasteful number, since it uses less digits than its factorization.

72441667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219188.

The product of its digits is 56448, while the sum is 37.

The square root of 72441667 is about 8511.2670619597. The cubic root of 72441667 is about 416.8656833443.

It can be divided in two parts, 7244 and 1667, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 72441667 in words is "seventy-two million, four hundred forty-one thousand, six hundred sixty-seven".