65784992 has 192 divisors, whose sum is σ = 177811200. Its totient is φ = 23224320.

The previous prime is 65784977. The next prime is 65784997. The reversal of 65784992 is 29948756.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 65784992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65784997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1604492 + ... + 1604532.

It is an arithmetic number, because the mean of its divisors is an integer number (926100).

Almost surely, 2^65784992 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 65784992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88905600).

65784992 is an abundant number, since it is smaller than the sum of its proper divisors (112026208).

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

65784992 is a wasteful number, since it uses less digits than its factorization.

65784992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 111 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 50.

The square root of 65784992 is about 8110.7947822639. The cubic root of 65784992 is about 403.6846868187.

The spelling of 65784992 in words is "sixty-five million, seven hundred eighty-four thousand, nine hundred ninety-two".