63172266 has 16 divisors (see below), whose sum is σ = 130701600. Its totient is φ = 20331248.

The previous prime is 63172253. The next prime is 63172279. The reversal of 63172266 is 66227136.

It is an interprime number because it is at equal distance from previous prime (63172253) and next prime (63172279).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181356 + ... + 181703.

It is an arithmetic number, because the mean of its divisors is an integer number (8168850).

Almost surely, 2^63172266 is an apocalyptic number.

63172266 is an abundant number, since it is smaller than the sum of its proper divisors (67529334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63172266 is a wasteful number, since it uses less digits than its factorization.

63172266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363093.

The product of its digits is 18144, while the sum is 33.

The square root of 63172266 is about 7948.0982631067. The cubic root of 63172266 is about 398.2680660014.

The spelling of 63172266 in words is "sixty-three million, one hundred seventy-two thousand, two hundred sixty-six".