63420005 has 16 divisors (see below), whose sum is σ = 87393600. Its totient is φ = 43695360.

The previous prime is 63419999. The next prime is 63420011. The reversal of 63420005 is 50002436.

It is an interprime number because it is at equal distance from previous prime (63419999) and next prime (63420011).

It is not a de Polignac number, because 63420005 - 2¹² = 63415909 is a prime.

It is a Curzon number.

It is a congruent number.

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, 29300 + ... + 31389.

It is an arithmetic number, because the mean of its divisors is an integer number (5462100).

Almost surely, 2^63420005 is an apocalyptic number.

It is an amenable number.

63420005 is a deficient number, since it is larger than the sum of its proper divisors (23973595).

63420005 is a wasteful number, since it uses less digits than its factorization.

63420005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60724.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 63420005 is about 7963.6678107515. The cubic root of 63420005 is about 398.7880084838.

Subtracting from 63420005 its reverse (50002436), we obtain a square (13417569 = 3663²).

The spelling of 63420005 in words is "sixty-three million, four hundred twenty thousand, five".