68497655 has 8 divisors (see below), whose sum is σ = 82966032. Its totient is φ = 54285568.

The previous prime is 68497621. The next prime is 68497691. The reversal of 68497655 is 55679486.

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 68497655 - 2⁸ = 68497399 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63482 + ... + 64551.

It is an arithmetic number, because the mean of its divisors is an integer number (10370754).

Almost surely, 2^68497655 is an apocalyptic number.

68497655 is a deficient number, since it is larger than the sum of its proper divisors (14468377).

68497655 is a wasteful number, since it uses less digits than its factorization.

68497655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128145.

The product of its digits is 1814400, while the sum is 50.

The square root of 68497655 is about 8276.3310107801. The cubic root of 68497655 is about 409.1588047504.

The spelling of 68497655 in words is "sixty-eight million, four hundred ninety-seven thousand, six hundred fifty-five".