67505412 has 24 divisors (see below), whose sum is σ = 169629376. Its totient is φ = 20770848.

The previous prime is 67505407. The next prime is 67505413. The reversal of 67505412 is 21450576.

It is a self number, because there is not a number n which added to its sum of digits gives 67505412.

It is not an unprimeable number, because it can be changed into a prime (67505413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216208 + ... + 216519.

Almost surely, 2^67505412 is an apocalyptic number.

It is an amenable number.

67505412 is an abundant number, since it is smaller than the sum of its proper divisors (102123964).

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

67505412 is a wasteful number, since it uses less digits than its factorization.

67505412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432747 (or 432745 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 67505412 is about 8216.1677198071. The cubic root of 67505412 is about 407.1735239970.

Adding to 67505412 its reverse (21450576), we get a palindrome (88955988).

The spelling of 67505412 in words is "sixty-seven million, five hundred five thousand, four hundred twelve".