68925555 has 24 divisors (see below), whose sum is σ = 123327360. Its totient is φ = 35573760.

The previous prime is 68925553. The next prime is 68925569. The reversal of 68925555 is 55552986.

68925555 is a `hidden beast` number, since 6 + 8 + 92 + 5 + 555 = 666.

It is not a de Polignac number, because 68925555 - 2¹ = 68925553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 68925555.

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 23 ways as a sum of consecutive naturals, for example, 23310 + ... + 26099.

It is an arithmetic number, because the mean of its divisors is an integer number (5138640).

Almost surely, 2^68925555 is an apocalyptic number.

68925555 is a deficient number, since it is larger than the sum of its proper divisors (54401805).

68925555 is a wasteful number, since it uses less digits than its factorization.

68925555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49451 (or 49448 counting only the distinct ones).

The product of its digits is 540000, while the sum is 45.

The square root of 68925555 is about 8302.1415911800. The cubic root of 68925555 is about 410.0090321231.

It can be divided in two parts, 689 and 25555, that added together give a square (26244 = 162²).

The spelling of 68925555 in words is "sixty-eight million, nine hundred twenty-five thousand, five hundred fifty-five".