72143563 has 8 divisors (see below), whose sum is σ = 76606560. Its totient is φ = 67704960.

The previous prime is 72143537. The next prime is 72143579. The reversal of 72143563 is 36534127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72143563 - 2⁵ = 72143531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72144563) 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 7 ways as a sum of consecutive naturals, for example, 193 + ... + 12013.

It is an arithmetic number, because the mean of its divisors is an integer number (9575820).

Almost surely, 2^72143563 is an apocalyptic number.

72143563 is a deficient number, since it is larger than the sum of its proper divisors (4462997).

72143563 is a wasteful number, since it uses less digits than its factorization.

72143563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12197.

The product of its digits is 15120, while the sum is 31.

The square root of 72143563 is about 8493.7366924105. The cubic root of 72143563 is about 416.2930838841.

The spelling of 72143563 in words is "seventy-two million, one hundred forty-three thousand, five hundred sixty-three".