68925559 has 4 divisors (see below), whose sum is σ = 72553240. Its totient is φ = 65297880.

The previous prime is 68925553. The next prime is 68925569. The reversal of 68925559 is 95552986.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95552986 = 2 ⋅47776493.

It is a cyclic number.

It is not a de Polignac number, because 68925559 - 2⁹ = 68925047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68925553) 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, 1813812 + ... + 1813849.

It is an arithmetic number, because the mean of its divisors is an integer number (18138310).

Almost surely, 2^68925559 is an apocalyptic number.

68925559 is a deficient number, since it is larger than the sum of its proper divisors (3627681).

68925559 is a wasteful number, since it uses less digits than its factorization.

68925559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3627680.

The product of its digits is 972000, while the sum is 49.

The square root of 68925559 is about 8302.1418320816. The cubic root of 68925559 is about 410.0090400545.

The spelling of 68925559 in words is "sixty-eight million, nine hundred twenty-five thousand, five hundred fifty-nine".