172630705 has 32 divisors (see below), whose sum is σ = 230364288. Its totient is φ = 123379200.

The previous prime is 172630693. The next prime is 172630727. The reversal of 172630705 is 507036271.

It is not a de Polignac number, because 172630705 - 2⁵ = 172630673 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 562162 + ... + 562468.

It is an arithmetic number, because the mean of its divisors is an integer number (7198884).

Almost surely, 2^172630705 is an apocalyptic number.

It is an amenable number.

172630705 is a deficient number, since it is larger than the sum of its proper divisors (57733583).

172630705 is a wasteful number, since it uses less digits than its factorization.

172630705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 172630705 is about 13138.9004486677. The cubic root of 172630705 is about 556.8087029639.

Adding to 172630705 its reverse (507036271), we get a palindrome (679666976).

The spelling of 172630705 in words is "one hundred seventy-two million, six hundred thirty thousand, seven hundred five".