63220655 has 8 divisors (see below), whose sum is σ = 75913200. Its totient is φ = 50544256.

The previous prime is 63220639. The next prime is 63220697. The reversal of 63220655 is 55602236.

It is a happy number.

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 63220655 - 2⁴ = 63220639 is a prime.

It is a congruent number.

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, 7676 + ... + 13614.

It is an arithmetic number, because the mean of its divisors is an integer number (9489150).

Almost surely, 2^63220655 is an apocalyptic number.

63220655 is a deficient number, since it is larger than the sum of its proper divisors (12692545).

63220655 is a wasteful number, since it uses less digits than its factorization.

63220655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8073.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 63220655 is about 7951.1417419135. The cubic root of 63220655 is about 398.3697291526.

The spelling of 63220655 in words is "sixty-three million, two hundred twenty thousand, six hundred fifty-five".