65496840 has 64 divisors (see below), whose sum is σ = 198365760. Its totient is φ = 17299200.

The previous prime is 65496839. The next prime is 65496853. The reversal of 65496840 is 4869456.

It is a junction number, because it is equal to n+sod(n) for n = 65496792 and 65496801.

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, 10290 + ... + 15390.

It is an arithmetic number, because the mean of its divisors is an integer number (3099465).

Almost surely, 2^65496840 is an apocalyptic number.

65496840 is a gapful number since it is divisible by the number (60) 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 65496840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99182880).

65496840 is an abundant number, since it is smaller than the sum of its proper divisors (132868920).

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

65496840 is a wasteful number, since it uses less digits than its factorization.

65496840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5222 (or 5218 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 65496840 is about 8093.0118003127. The cubic root of 65496840 is about 403.0944164046.

The spelling of 65496840 in words is "sixty-five million, four hundred ninety-six thousand, eight hundred forty".