72068243 has 4 divisors (see below), whose sum is σ = 77611968. Its totient is φ = 66524520.

The previous prime is 72068239. The next prime is 72068251. The reversal of 72068243 is 34286027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34286027 = 223 ⋅153749.

It is a cyclic number.

It is not a de Polignac number, because 72068243 - 2² = 72068239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72068203) 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, 2771843 + ... + 2771868.

It is an arithmetic number, because the mean of its divisors is an integer number (19402992).

Almost surely, 2^72068243 is an apocalyptic number.

72068243 is a deficient number, since it is larger than the sum of its proper divisors (5543725).

72068243 is a wasteful number, since it uses less digits than its factorization.

72068243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5543724.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 72068243 is about 8489.3016791724. The cubic root of 72068243 is about 416.1481593659.

The spelling of 72068243 in words is "seventy-two million, sixty-eight thousand, two hundred forty-three".