65650340 has 48 divisors (see below), whose sum is σ = 158212992. Its totient is φ = 22415616.

The previous prime is 65650331. The next prime is 65650357. The reversal of 65650340 is 4305656.

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, 38792 + ... + 40448.

It is an arithmetic number, because the mean of its divisors is an integer number (3296104).

Almost surely, 2^65650340 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 65650340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79106496).

65650340 is an abundant number, since it is smaller than the sum of its proper divisors (92562652).

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

65650340 is a wasteful number, since it uses less digits than its factorization.

65650340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956 (or 1954 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 65650340 is about 8102.4897408142. The cubic root of 65650340 is about 403.4090713738.

Adding to 65650340 its reverse (4305656), we get a palindrome (69955996).

The spelling of 65650340 in words is "sixty-five million, six hundred fifty thousand, three hundred forty".