65820648 has 32 divisors (see below), whose sum is σ = 164835360. Its totient is φ = 21902400.

The previous prime is 65820613. The next prime is 65820649. The reversal of 65820648 is 84602856.

It is a Smith number, since the sum of its digits (39) 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 (65820649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14223 + ... + 18273.

It is an arithmetic number, because the mean of its divisors is an integer number (5151105).

Almost surely, 2^65820648 is an apocalyptic number.

It is an amenable number.

65820648 is an abundant number, since it is smaller than the sum of its proper divisors (99014712).

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

65820648 is a wasteful number, since it uses less digits than its factorization.

65820648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4737 (or 4733 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 65820648 is about 8112.9925428291. The cubic root of 65820648 is about 403.7576071055.

The spelling of 65820648 in words is "sixty-five million, eight hundred twenty thousand, six hundred forty-eight".