63471646 has 32 divisors (see below), whose sum is σ = 111393792. Its totient is φ = 26563680.

The previous prime is 63471643. The next prime is 63471671. The reversal of 63471646 is 64617436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63471643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147051 + ... + 147481.

It is an arithmetic number, because the mean of its divisors is an integer number (3481056).

Almost surely, 2^63471646 is an apocalyptic number.

63471646 is a deficient number, since it is larger than the sum of its proper divisors (47922146).

63471646 is a wasteful number, since it uses less digits than its factorization.

63471646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664.

The product of its digits is 72576, while the sum is 37.

The square root of 63471646 is about 7966.9094384209. The cubic root of 63471646 is about 398.8962194730.

The spelling of 63471646 in words is "sixty-three million, four hundred seventy-one thousand, six hundred forty-six".