67780530 has 64 divisors (see below), whose sum is σ = 191393280. Its totient is φ = 17010432.

The previous prime is 67780529. The next prime is 67780549. The reversal of 67780530 is 3508776.

It is a Curzon number.

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 31 ways as a sum of consecutive naturals, for example, 2794 + ... + 11973.

It is an arithmetic number, because the mean of its divisors is an integer number (2990520).

Almost surely, 2^67780530 is an apocalyptic number.

67780530 is an abundant number, since it is smaller than the sum of its proper divisors (123612750).

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

67780530 is a wasteful number, since it uses less digits than its factorization.

67780530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14800 (or 14794 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 67780530 is about 8232.8931731196. The cubic root of 67780530 is about 407.7259188636.

The spelling of 67780530 in words is "sixty-seven million, seven hundred eighty thousand, five hundred thirty".