63423655 has 4 divisors (see below), whose sum is σ = 76108392. Its totient is φ = 50738920.

The previous prime is 63423637. The next prime is 63423697. The reversal of 63423655 is 55632436.

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

It is not a de Polignac number, because 63423655 - 2⁷ = 63423527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63423655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6342361 + ... + 6342370.

It is an arithmetic number, because the mean of its divisors is an integer number (19027098).

Almost surely, 2^63423655 is an apocalyptic number.

63423655 is a deficient number, since it is larger than the sum of its proper divisors (12684737).

63423655 is a wasteful number, since it uses less digits than its factorization.

63423655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12684736.

The product of its digits is 64800, while the sum is 34.

The square root of 63423655 is about 7963.8969732161. The cubic root of 63423655 is about 398.7956587949.

The spelling of 63423655 in words is "sixty-three million, four hundred twenty-three thousand, six hundred fifty-five".