172663481 has 8 divisors (see below), whose sum is σ = 173880000. Its totient is φ = 171451440.

The previous prime is 172663457. The next prime is 172663487. The reversal of 172663481 is 184366271.

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 172663481 - 2⁶ = 172663417 is a prime.

It is a super-2 number, since 2×172663481² = 59625355342074722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172663487) 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, 113516 + ... + 115026.

It is an arithmetic number, because the mean of its divisors is an integer number (21735000).

Almost surely, 2^172663481 is an apocalyptic number.

It is an amenable number.

172663481 is a deficient number, since it is larger than the sum of its proper divisors (1216519).

172663481 is a wasteful number, since it uses less digits than its factorization.

172663481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239.

The product of its digits is 48384, while the sum is 38.

The square root of 172663481 is about 13140.1476780134. The cubic root of 172663481 is about 556.8439396602.

The spelling of 172663481 in words is "one hundred seventy-two million, six hundred sixty-three thousand, four hundred eighty-one".