72018063 has 12 divisors (see below), whose sum is σ = 112028280. Its totient is φ = 44318736.

The previous prime is 72018041. The next prime is 72018097. The reversal of 72018063 is 36081027.

It is not a de Polignac number, because 72018063 - 2¹⁸ = 71755919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72011063) 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 11 ways as a sum of consecutive naturals, for example, 307653 + ... + 307886.

It is an arithmetic number, because the mean of its divisors is an integer number (9335690).

Almost surely, 2^72018063 is an apocalyptic number.

72018063 is a deficient number, since it is larger than the sum of its proper divisors (40010217).

72018063 is a wasteful number, since it uses less digits than its factorization.

72018063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615558 (or 615555 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 72018063 is about 8486.3456799732. The cubic root of 72018063 is about 416.0515511035.

The spelling of 72018063 in words is "seventy-two million, eighteen thousand, sixty-three".