65035440 has 80 divisors (see below), whose sum is σ = 224018400. Its totient is φ = 17342208.

The previous prime is 65035417. The next prime is 65035447. The reversal of 65035440 is 4453056.

65035440 is a `hidden beast` number, since 650 + 3 + 5 + 4 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (65035447) 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, 12895 + ... + 17214.

It is an arithmetic number, because the mean of its divisors is an integer number (2800230).

Almost surely, 2^65035440 is an apocalyptic number.

65035440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65035440 is an abundant number, since it is smaller than the sum of its proper divisors (158982960).

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

65035440 is a wasteful number, since it uses less digits than its factorization.

65035440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30131 (or 30119 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 65035440 is about 8064.4553442871. The cubic root of 65035440 is about 402.1456366954.

Adding to 65035440 its reverse (4453056), we get a palindrome (69488496).

The spelling of 65035440 in words is "sixty-five million, thirty-five thousand, four hundred forty".