67745420 has 12 divisors (see below), whose sum is σ = 142265424. Its totient is φ = 27098160.

The previous prime is 67745417. The next prime is 67745443. The reversal of 67745420 is 2454776.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1693616 + ... + 1693655.

It is an arithmetic number, because the mean of its divisors is an integer number (11855452).

Almost surely, 2^67745420 is an apocalyptic number.

It is an amenable number.

67745420 is an abundant number, since it is smaller than the sum of its proper divisors (74520004).

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

67745420 is a wasteful number, since it uses less digits than its factorization.

67745420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3387280 (or 3387278 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 67745420 is about 8230.7605966885. The cubic root of 67745420 is about 407.6555066598.

The spelling of 67745420 in words is "sixty-seven million, seven hundred forty-five thousand, four hundred twenty".