64471438 has 16 divisors (see below), whose sum is σ = 101959200. Its totient is φ = 30514176.

The previous prime is 64471417. The next prime is 64471439. The reversal of 64471438 is 83417446.

It is a junction number, because it is equal to n+sod(n) for n = 64471397 and 64471406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64471439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2763 + ... + 11686.

It is an arithmetic number, because the mean of its divisors is an integer number (6372450).

Almost surely, 2^64471438 is an apocalyptic number.

64471438 is a deficient number, since it is larger than the sum of its proper divisors (37487762).

64471438 is a wasteful number, since it uses less digits than its factorization.

64471438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14571.

The product of its digits is 64512, while the sum is 37.

The square root of 64471438 is about 8029.4108127558. The cubic root of 64471438 is about 400.9797607130.

The spelling of 64471438 in words is "sixty-four million, four hundred seventy-one thousand, four hundred thirty-eight".