67992720 has 40 divisors (see below), whose sum is σ = 210778176. Its totient is φ = 18131328.

The previous prime is 67992599. The next prime is 67992737. The reversal of 67992720 is 2729976.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 141412 + ... + 141891.

Almost surely, 2^67992720 is an apocalyptic number.

67992720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67992720 is an abundant number, since it is smaller than the sum of its proper divisors (142785456).

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

67992720 is a wasteful number, since it uses less digits than its factorization.

67992720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283319 (or 283313 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 67992720 is about 8245.7698245828. The cubic root of 67992720 is about 408.1509437655.

The spelling of 67992720 in words is "sixty-seven million, nine hundred ninety-two thousand, seven hundred twenty".