63420305 has 16 divisors (see below), whose sum is σ = 82387200. Its totient is φ = 46588608.

The previous prime is 63420299. The next prime is 63420311. The reversal of 63420305 is 50302436.

It is an interprime number because it is at equal distance from previous prime (63420299) and next prime (63420311).

It is a cyclic number.

It is not a de Polignac number, because 63420305 - 2⁴ = 63420289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10484 + ... + 15386.

It is an arithmetic number, because the mean of its divisors is an integer number (5149200).

Almost surely, 2^63420305 is an apocalyptic number.

63420305 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

63420305 is a deficient number, since it is larger than the sum of its proper divisors (18966895).

63420305 is a wasteful number, since it uses less digits than its factorization.

63420305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5120.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 63420305 is about 7963.6866462713. The cubic root of 63420305 is about 398.7886372875.

The spelling of 63420305 in words is "sixty-three million, four hundred twenty thousand, three hundred five".