72075911 has 4 divisors (see below), whose sum is σ = 75869400. Its totient is φ = 68282424.

The previous prime is 72075851. The next prime is 72075917. The reversal of 72075911 is 11957027.

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 72075911 - 2⁶ = 72075847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72075917) 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, 1896716 + ... + 1896753.

It is an arithmetic number, because the mean of its divisors is an integer number (18967350).

Almost surely, 2^72075911 is an apocalyptic number.

72075911 is a deficient number, since it is larger than the sum of its proper divisors (3793489).

72075911 is a wasteful number, since it uses less digits than its factorization.

72075911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3793488.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 72075911 is about 8489.7532944132. The cubic root of 72075911 is about 416.1629181130.

The spelling of 72075911 in words is "seventy-two million, seventy-five thousand, nine hundred eleven".