65783472 has 80 divisors (see below), whose sum is σ = 189452160. Its totient is φ = 19547136.

The previous prime is 65783461. The next prime is 65783479. The reversal of 65783472 is 27438756.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (65783479) 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, 13383 + ... + 17625.

It is an arithmetic number, because the mean of its divisors is an integer number (2368152).

Almost surely, 2^65783472 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 65783472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94726080).

65783472 is an abundant number, since it is smaller than the sum of its proper divisors (123668688).

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

65783472 is a wasteful number, since it uses less digits than its factorization.

65783472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290 (or 4284 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 65783472 is about 8110.7010794382. The cubic root of 65783472 is about 403.6815776726.

The spelling of 65783472 in words is "sixty-five million, seven hundred eighty-three thousand, four hundred seventy-two".