63648273 has 12 divisors (see below), whose sum is σ = 91895280. Its totient is φ = 39167856.

The previous prime is 63648269. The next prime is 63648307. The reversal of 63648273 is 37284636.

It is not a de Polignac number, because 63648273 - 2² = 63648269 is a prime.

It is a super-2 number, since 2×63648273² = 8102205311765058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (63648223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62263 + ... + 63276.

It is an arithmetic number, because the mean of its divisors is an integer number (7657940).

Almost surely, 2^63648273 is an apocalyptic number.

It is an amenable number.

63648273 is a deficient number, since it is larger than the sum of its proper divisors (28247007).

63648273 is a wasteful number, since it uses less digits than its factorization.

63648273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125568 (or 125555 counting only the distinct ones).

The product of its digits is 145152, while the sum is 39.

The square root of 63648273 is about 7977.9867761234. The cubic root of 63648273 is about 399.2658889433.

The spelling of 63648273 in words is "sixty-three million, six hundred forty-eight thousand, two hundred seventy-three".