63505438 has 32 divisors (see below), whose sum is σ = 105986880. Its totient is φ = 28483840.

The previous prime is 63505427. The next prime is 63505457. The reversal of 63505438 is 83450536.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225858 + ... + 226138.

It is an arithmetic number, because the mean of its divisors is an integer number (3312090).

Almost surely, 2^63505438 is an apocalyptic number.

63505438 is a deficient number, since it is larger than the sum of its proper divisors (42481442).

63505438 is a wasteful number, since it uses less digits than its factorization.

63505438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 63505438 is about 7969.0299284166. The cubic root of 63505438 is about 398.9669970588.

The spelling of 63505438 in words is "sixty-three million, five hundred five thousand, four hundred thirty-eight".