72044717 has 4 divisors (see below), whose sum is σ = 75177120. Its totient is φ = 68912316.

The previous prime is 72044711. The next prime is 72044719. The reversal of 72044717 is 71744027.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71744027 = 599 ⋅119773.

It is a cyclic number.

It is not a de Polignac number, because 72044717 - 2⁴ = 72044701 is a prime.

It is a super-2 number, since 2×72044717² = 10380882495220178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72044711) 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, 1566167 + ... + 1566212.

It is an arithmetic number, because the mean of its divisors is an integer number (18794280).

Almost surely, 2^72044717 is an apocalyptic number.

It is an amenable number.

72044717 is a deficient number, since it is larger than the sum of its proper divisors (3132403).

72044717 is a wasteful number, since it uses less digits than its factorization.

72044717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3132402.

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 72044717 is about 8487.9159397346. The cubic root of 72044717 is about 416.1028718869.

The spelling of 72044717 in words is "seventy-two million, forty-four thousand, seven hundred seventeen".