65424645 has 64 divisors (see below), whose sum is σ = 136684800. Its totient is φ = 29272320.

The previous prime is 65424641. The next prime is 65424649. The reversal of 65424645 is 54642456.

65424645 is a `hidden beast` number, since 6 + 5 + 4 + 2 + 4 + 645 = 666.

65424645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (65424641) and next prime (65424649).

It is not a de Polignac number, because 65424645 - 2² = 65424641 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65424641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17611 + ... + 20999.

It is an arithmetic number, because the mean of its divisors is an integer number (2135700).

Almost surely, 2^65424645 is an apocalyptic number.

65424645 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65424645 is an abundant number, since it is smaller than the sum of its proper divisors (71260155).

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

65424645 is a wasteful number, since it uses less digits than its factorization.

65424645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3427 (or 3421 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 65424645 is about 8088.5502409270. The cubic root of 65424645 is about 402.9462560738.

The spelling of 65424645 in words is "sixty-five million, four hundred twenty-four thousand, six hundred forty-five".