67993900 has 72 divisors (see below), whose sum is σ = 160309184. Its totient is φ = 24883200.

The previous prime is 67993889. The next prime is 67993909. The reversal of 67993900 is 939976.

It is not an unprimeable number, because it can be changed into a prime (67993909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 250765 + ... + 251035.

Almost surely, 2^67993900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67993900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80154592).

67993900 is an abundant number, since it is smaller than the sum of its proper divisors (92315284).

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

67993900 is a wasteful number, since it uses less digits than its factorization.

67993900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 67993900 is about 8245.8413761120. The cubic root of 67993900 is about 408.1533048777.

The spelling of 67993900 in words is "sixty-seven million, nine hundred ninety-three thousand, nine hundred".