68997855 has 8 divisors (see below), whose sum is σ = 110396592. Its totient is φ = 36798848.

The previous prime is 68997839. The next prime is 68997899. The reversal of 68997855 is 55879986.

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 68997855 - 2⁴ = 68997839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68997795 and 68997804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2299914 + ... + 2299943.

It is an arithmetic number, because the mean of its divisors is an integer number (13799574).

Almost surely, 2^68997855 is an apocalyptic number.

68997855 is a deficient number, since it is larger than the sum of its proper divisors (41398737).

68997855 is a wasteful number, since it uses less digits than its factorization.

68997855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4599865.

The product of its digits is 5443200, while the sum is 57.

The square root of 68997855 is about 8306.4947480872. The cubic root of 68997855 is about 410.1523427528.

The spelling of 68997855 in words is "sixty-eight million, nine hundred ninety-seven thousand, eight hundred fifty-five".