63404105 has 4 divisors (see below), whose sum is σ = 76084932. Its totient is φ = 50723280.

The previous prime is 63404093. The next prime is 63404129. The reversal of 63404105 is 50140436.

It is a happy number.

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 50580544 + 12823561 = 7112^2 + 3581^2 .

It is not a de Polignac number, because 63404105 - 2⁶ = 63404041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6340406 + ... + 6340415.

It is an arithmetic number, because the mean of its divisors is an integer number (19021233).

Almost surely, 2^63404105 is an apocalyptic number.

It is an amenable number.

63404105 is a deficient number, since it is larger than the sum of its proper divisors (12680827).

63404105 is a wasteful number, since it uses less digits than its factorization.

63404105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12680826.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 63404105 is about 7962.6694644447. The cubic root of 63404105 is about 398.7546790461.

The spelling of 63404105 in words is "sixty-three million, four hundred four thousand, one hundred five".