72211863 has 8 divisors (see below), whose sum is σ = 97719808. Its totient is φ = 47422584.

The previous prime is 72211847. The next prime is 72211877. The reversal of 72211863 is 36811227.

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

It is not a de Polignac number, because 72211863 - 2⁴ = 72211847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72211863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72211883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179431 + ... + 179832.

It is an arithmetic number, because the mean of its divisors is an integer number (12214976).

Almost surely, 2^72211863 is an apocalyptic number.

72211863 is a deficient number, since it is larger than the sum of its proper divisors (25507945).

72211863 is a wasteful number, since it uses less digits than its factorization.

72211863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359333.

The product of its digits is 4032, while the sum is 30.

The square root of 72211863 is about 8497.7563509435. The cubic root of 72211863 is about 416.4244139177.

The spelling of 72211863 in words is "seventy-two million, two hundred eleven thousand, eight hundred sixty-three".