63172267 has 4 divisors (see below), whose sum is σ = 64713096. Its totient is φ = 61631440.

The previous prime is 63172253. The next prime is 63172279. The reversal of 63172267 is 76227136.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 63172267 - 2¹⁹ = 62647979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63172217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770353 + ... + 770434.

It is an arithmetic number, because the mean of its divisors is an integer number (16178274).

Almost surely, 2^63172267 is an apocalyptic number.

63172267 is a deficient number, since it is larger than the sum of its proper divisors (1540829).

63172267 is a wasteful number, since it uses less digits than its factorization.

63172267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540828.

The product of its digits is 21168, while the sum is 34.

The square root of 63172267 is about 7948.0983260148. The cubic root of 63172267 is about 398.2680681028.

The spelling of 63172267 in words is "sixty-three million, one hundred seventy-two thousand, two hundred sixty-seven".