67890655 has 8 divisors (see below), whose sum is σ = 93107232. Its totient is φ = 46553568.

The previous prime is 67890643. The next prime is 67890661. The reversal of 67890655 is 55609876.

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

It is a cyclic number.

It is not a de Polignac number, because 67890655 - 2⁵ = 67890623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 969832 + ... + 969901.

It is an arithmetic number, because the mean of its divisors is an integer number (11638404).

Almost surely, 2^67890655 is an apocalyptic number.

67890655 is a deficient number, since it is larger than the sum of its proper divisors (25216577).

67890655 is a wasteful number, since it uses less digits than its factorization.

67890655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939745.

The product of its (nonzero) digits is 453600, while the sum is 46.

The square root of 67890655 is about 8239.5785693202. The cubic root of 67890655 is about 407.9466141061.

The spelling of 67890655 in words is "sixty-seven million, eight hundred ninety thousand, six hundred fifty-five".