68775563 has 8 divisors (see below), whose sum is σ = 71604768. Its totient is φ = 65997504.

The previous prime is 68775541. The next prime is 68775607. The reversal of 68775563 is 36557786.

It is a happy number.

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 68775563 - 2¹⁶ = 68710027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68775463) by changing a digit.

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, 10031 + ... + 15432.

It is an arithmetic number, because the mean of its divisors is an integer number (8950596).

Almost surely, 2^68775563 is an apocalyptic number.

68775563 is a deficient number, since it is larger than the sum of its proper divisors (2829205).

68775563 is a wasteful number, since it uses less digits than its factorization.

68775563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25573.

The product of its digits is 1058400, while the sum is 47.

The square root of 68775563 is about 8293.1033395225. The cubic root of 68775563 is about 409.7114030926.

The spelling of 68775563 in words is "sixty-eight million, seven hundred seventy-five thousand, five hundred sixty-three".