172216063 has 4 divisors (see below), whose sum is σ = 174786520. Its totient is φ = 169645608.

The previous prime is 172216061. The next prime is 172216081. The reversal of 172216063 is 360612271.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 172216063 - 2¹ = 172216061 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 (172216061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1285128 + ... + 1285261.

It is an arithmetic number, because the mean of its divisors is an integer number (43696630).

Almost surely, 2^172216063 is an apocalyptic number.

172216063 is a deficient number, since it is larger than the sum of its proper divisors (2570457).

172216063 is an equidigital number, since it uses as much as digits as its factorization.

172216063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570456.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 172216063 is about 13123.1117879869. Note that the first 3 decimals coincide. The cubic root of 172216063 is about 556.3625456234.

The spelling of 172216063 in words is "one hundred seventy-two million, two hundred sixteen thousand, sixty-three".