63402005 has 4 divisors (see below), whose sum is σ = 76082412. Its totient is φ = 50721600.

The previous prime is 63401983. The next prime is 63402041. The reversal of 63402005 is 50020436.

63402005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16630084 + 46771921 = 4078^2 + 6839^2 .

It is not a de Polignac number, because 63402005 - 2⁶ = 63401941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6340196 + ... + 6340205.

It is an arithmetic number, because the mean of its divisors is an integer number (19020603).

Almost surely, 2^63402005 is an apocalyptic number.

It is an amenable number.

63402005 is a deficient number, since it is larger than the sum of its proper divisors (12680407).

63402005 is a wasteful number, since it uses less digits than its factorization.

63402005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12680406.

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

The square root of 63402005 is about 7962.5375980274. The cubic root of 63402005 is about 398.7502766284.

The spelling of 63402005 in words is "sixty-three million, four hundred two thousand, five".