65486784 has 112 divisors (see below), whose sum is σ = 191511936. Its totient is φ = 19584000.

The previous prime is 65486753. The next prime is 65486789. The reversal of 65486784 is 48768456.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65486789) 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, 213159 + ... + 213465.

It is an arithmetic number, because the mean of its divisors is an integer number (1709928).

Almost surely, 2^65486784 is an apocalyptic number.

65486784 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65486784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95755968).

65486784 is an abundant number, since it is smaller than the sum of its proper divisors (126025152).

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

65486784 is a wasteful number, since it uses less digits than its factorization.

65486784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 424 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 48.

The square root of 65486784 is about 8092.3904997226. The cubic root of 65486784 is about 403.0737857660.

The spelling of 65486784 in words is "sixty-five million, four hundred eighty-six thousand, seven hundred eighty-four".