65671944 has 32 divisors (see below), whose sum is σ = 176809920. Its totient is φ = 20206656.

The previous prime is 65671927. The next prime is 65671951. The reversal of 65671944 is 44917656.

It is a junction number, because it is equal to n+sod(n) for n = 65671896 and 65671905.

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 7 ways as a sum of consecutive naturals, for example, 104932 + ... + 105555.

It is an arithmetic number, because the mean of its divisors is an integer number (5525310).

Almost surely, 2^65671944 is an apocalyptic number.

It is an amenable number.

65671944 is an abundant number, since it is smaller than the sum of its proper divisors (111137976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65671944 is a wasteful number, since it uses less digits than its factorization.

65671944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210509 (or 210505 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 65671944 is about 8103.8228016165. The cubic root of 65671944 is about 403.4533173683.

The spelling of 65671944 in words is "sixty-five million, six hundred seventy-one thousand, nine hundred forty-four".