63421105 has 32 divisors (see below), whose sum is σ = 85536000. Its totient is φ = 44755200.

The previous prime is 63421103. The next prime is 63421123. The reversal of 63421105 is 50112436.

It is not a de Polignac number, because 63421105 - 2¹ = 63421103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63421103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 425571 + ... + 425719.

It is an arithmetic number, because the mean of its divisors is an integer number (2673000).

Almost surely, 2^63421105 is an apocalyptic number.

It is an amenable number.

63421105 is a deficient number, since it is larger than the sum of its proper divisors (22114895).

63421105 is a wasteful number, since it uses less digits than its factorization.

63421105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 63421105 is about 7963.7368741063. The cubic root of 63421105 is about 398.7903140879.

It can be divided in two parts, 6342 and 1105, that added together give a palindrome (7447).

The spelling of 63421105 in words is "sixty-three million, four hundred twenty-one thousand, one hundred five".