65300040 has 128 divisors (see below), whose sum is σ = 234460800. Its totient is φ = 16070400.

The previous prime is 65300029. The next prime is 65300063. The reversal of 65300040 is 4000356.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 65299986 and 65300022.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11715 + ... + 16365.

It is an arithmetic number, because the mean of its divisors is an integer number (1831725).

Almost surely, 2^65300040 is an apocalyptic number.

65300040 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 65300040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117230400).

65300040 is an abundant number, since it is smaller than the sum of its proper divisors (169160760).

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

65300040 is a wasteful number, since it uses less digits than its factorization.

65300040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4684 (or 4674 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 65300040 is about 8080.8440153241. The cubic root of 65300040 is about 402.6902820577.

Adding to 65300040 its reverse (4000356), we get a palindrome (69300396).

The spelling of 65300040 in words is "sixty-five million, three hundred thousand, forty".