172630655 has 8 divisors (see below), whose sum is σ = 208548000. Its totient is φ = 137177056.

The previous prime is 172630651. The next prime is 172630657. The reversal of 172630655 is 556036271.

172630655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 172630655 - 2² = 172630651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172630651) 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, 115115 + ... + 116604.

It is an arithmetic number, because the mean of its divisors is an integer number (26068500).

Almost surely, 2^172630655 is an apocalyptic number.

172630655 is a deficient number, since it is larger than the sum of its proper divisors (35917345).

172630655 is a wasteful number, since it uses less digits than its factorization.

172630655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231873.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 172630655 is about 13138.8985459208. The cubic root of 172630655 is about 556.8086492066.

The spelling of 172630655 in words is "one hundred seventy-two million, six hundred thirty thousand, six hundred fifty-five".