67045520 has 20 divisors (see below), whose sum is σ = 155881020. Its totient is φ = 26818176.

The previous prime is 67045507. The next prime is 67045541. The reversal of 67045520 is 2554076.

67045520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 44729344 + 22316176 = 6688^2 + 4724^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 418955 + ... + 419114.

It is an arithmetic number, because the mean of its divisors is an integer number (7794051).

Almost surely, 2^67045520 is an apocalyptic number.

It is an amenable number.

67045520 is an abundant number, since it is smaller than the sum of its proper divisors (88835500).

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

67045520 is a wasteful number, since it uses less digits than its factorization.

67045520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838082 (or 838076 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 67045520 is about 8188.1328763034. The cubic root of 67045520 is about 406.2467701518.

Adding to 67045520 its reverse (2554076), we get a palindrome (69599596).

The spelling of 67045520 in words is "sixty-seven million, forty-five thousand, five hundred twenty".