63390505 has 8 divisors (see below), whose sum is σ = 78522624. Its totient is φ = 49076400.

The previous prime is 63390493. The next prime is 63390511. The reversal of 63390505 is 50509336.

63390505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63390505 - 2⁵ = 63390473 is a prime.

It is a super-2 number, since 2×63390505² = 8036712248310050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 204331 + ... + 204640.

It is an arithmetic number, because the mean of its divisors is an integer number (9815328).

Almost surely, 2^63390505 is an apocalyptic number.

It is an amenable number.

63390505 is a deficient number, since it is larger than the sum of its proper divisors (15132119).

63390505 is a wasteful number, since it uses less digits than its factorization.

63390505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409007.

The product of its (nonzero) digits is 12150, while the sum is 31.

The square root of 63390505 is about 7961.8154336809. The cubic root of 63390505 is about 398.7261664263.

The spelling of 63390505 in words is "sixty-three million, three hundred ninety thousand, five hundred five".