65861448 has 64 divisors (see below), whose sum is σ = 175224000. Its totient is φ = 20570112.

The previous prime is 65861363. The next prime is 65861461. The reversal of 65861448 is 84416856.

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, 43488 + ... + 44976.

It is an arithmetic number, because the mean of its divisors is an integer number (2737875).

Almost surely, 2^65861448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65861448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87612000).

65861448 is an abundant number, since it is smaller than the sum of its proper divisors (109362552).

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

65861448 is a wasteful number, since it uses less digits than its factorization.

65861448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614 (or 1610 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 65861448 is about 8115.5066385285. The cubic root of 65861448 is about 403.8410151155.

The spelling of 65861448 in words is "sixty-five million, eight hundred sixty-one thousand, four hundred forty-eight".