63486905 has 8 divisors (see below), whose sum is σ = 76260552. Its totient is φ = 50738688.

The previous prime is 63486881. The next prime is 63486937. The reversal of 63486905 is 50968436.

It can be written as a sum of positive squares in 4 ways, for example, as 18757561 + 44729344 = 4331^2 + 6688^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 63486905 - 2⁸ = 63486649 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 7 ways as a sum of consecutive naturals, for example, 344 + ... + 11273.

It is an arithmetic number, because the mean of its divisors is an integer number (9532569).

Almost surely, 2^63486905 is an apocalyptic number.

It is an amenable number.

63486905 is a deficient number, since it is larger than the sum of its proper divisors (12773647).

63486905 is a wasteful number, since it uses less digits than its factorization.

63486905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12715.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 63486905 is about 7967.8670295130. The cubic root of 63486905 is about 398.9281826675.

The spelling of 63486905 in words is "sixty-three million, four hundred eighty-six thousand, nine hundred five".