63481785 has 16 divisors (see below), whose sum is σ = 103237440. Its totient is φ = 33301440.

The previous prime is 63481729. The next prime is 63481801. The reversal of 63481785 is 58718436.

It is not a de Polignac number, because 63481785 - 2¹⁰ = 63480761 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33775 + ... + 35604.

It is an arithmetic number, because the mean of its divisors is an integer number (6452340).

Almost surely, 2^63481785 is an apocalyptic number.

It is an amenable number.

63481785 is a deficient number, since it is larger than the sum of its proper divisors (39755655).

63481785 is a wasteful number, since it uses less digits than its factorization.

63481785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69448.

The product of its digits is 161280, while the sum is 42.

The square root of 63481785 is about 7967.5457325327. The cubic root of 63481785 is about 398.9174583184.

It can be divided in two parts, 6348 and 1785, that multiplied together give a triangular number (11331180 = T₄₇₆₀).

The spelling of 63481785 in words is "sixty-three million, four hundred eighty-one thousand, seven hundred eighty-five".