67740686 has 8 divisors (see below), whose sum is σ = 109427304. Its totient is φ = 31264920.

The previous prime is 67740661. The next prime is 67740689. The reversal of 67740686 is 68604776.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67740689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1302680 + ... + 1302731.

It is an arithmetic number, because the mean of its divisors is an integer number (13678413).

Almost surely, 2^67740686 is an apocalyptic number.

67740686 is a deficient number, since it is larger than the sum of its proper divisors (41686618).

67740686 is a wasteful number, since it uses less digits than its factorization.

67740686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605426.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 67740686 is about 8230.4730119234. The cubic root of 67740686 is about 407.6460108832.

The spelling of 67740686 in words is "sixty-seven million, seven hundred forty thousand, six hundred eighty-six".