63972273 has 8 divisors (see below), whose sum is σ = 85773600. Its totient is φ = 42409568.

The previous prime is 63972263. The next prime is 63972277. The reversal of 63972273 is 37227936.

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 63972273 - 2¹⁴ = 63955889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63972277) 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, 59028 + ... + 60101.

It is an arithmetic number, because the mean of its divisors is an integer number (10721700).

Almost surely, 2^63972273 is an apocalyptic number.

It is an amenable number.

63972273 is a deficient number, since it is larger than the sum of its proper divisors (21801327).

63972273 is a wasteful number, since it uses less digits than its factorization.

63972273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119311.

The product of its digits is 95256, while the sum is 39.

The square root of 63972273 is about 7998.2668747673. The cubic root of 63972273 is about 399.9422270728.

The spelling of 63972273 in words is "sixty-three million, nine hundred seventy-two thousand, two hundred seventy-three".