65198944 has 24 divisors (see below), whose sum is σ = 135912168. Its totient is φ = 30681600.

The previous prime is 65198933. The next prime is 65198977. The reversal of 65198944 is 44989156.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 65198894 and 65198903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59382 + ... + 60469.

It is an arithmetic number, because the mean of its divisors is an integer number (5663007).

Almost surely, 2^65198944 is an apocalyptic number.

It is an amenable number.

65198944 is an abundant number, since it is smaller than the sum of its proper divisors (70713224).

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

65198944 is a wasteful number, since it uses less digits than its factorization.

65198944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119878 (or 119870 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 65198944 is about 8074.5863051924. The cubic root of 65198944 is about 402.4823628191.

The spelling of 65198944 in words is "sixty-five million, one hundred ninety-eight thousand, nine hundred forty-four".