63171073 has 4 divisors (see below), whose sum is σ = 72195520. Its totient is φ = 54146628.

The previous prime is 63171047. The next prime is 63171103. The reversal of 63171073 is 37017136.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63171073 - 2⁹ = 63170561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63171013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4512213 + ... + 4512226.

It is an arithmetic number, because the mean of its divisors is an integer number (18048880).

Almost surely, 2^63171073 is an apocalyptic number.

It is an amenable number.

63171073 is a deficient number, since it is larger than the sum of its proper divisors (9024447).

63171073 is an equidigital number, since it uses as much as digits as its factorization.

63171073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9024446.

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 63171073 is about 7948.0232133531. The cubic root of 63171073 is about 398.2655589054.

The spelling of 63171073 in words is "sixty-three million, one hundred seventy-one thousand, seventy-three".