172057663 has 16 divisors (see below), whose sum is σ = 189975456. Its totient is φ = 155151360.

The previous prime is 172057661. The next prime is 172057681. The reversal of 172057663 is 366750271.

It is a cyclic number.

It is not a de Polignac number, because 172057663 - 2¹ = 172057661 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 (172057661) 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 15 ways as a sum of consecutive naturals, for example, 36523 + ... + 40963.

It is an arithmetic number, because the mean of its divisors is an integer number (11873466).

Almost surely, 2^172057663 is an apocalyptic number.

172057663 is a deficient number, since it is larger than the sum of its proper divisors (17917793).

172057663 is a wasteful number, since it uses less digits than its factorization.

172057663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4554.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 172057663 is about 13117.0752456483. The cubic root of 172057663 is about 556.1919172110.

The spelling of 172057663 in words is "one hundred seventy-two million, fifty-seven thousand, six hundred sixty-three".