68828563 has 4 divisors (see below), whose sum is σ = 72877320. Its totient is φ = 64779808.

The previous prime is 68828537. The next prime is 68828593. The reversal of 68828563 is 36582886.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36582886 = 2 ⋅18291443.

It is a cyclic number.

It is not a de Polignac number, because 68828563 - 2²¹ = 66731411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68828533) 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 3 ways as a sum of consecutive naturals, for example, 2024353 + ... + 2024386.

It is an arithmetic number, because the mean of its divisors is an integer number (18219330).

Almost surely, 2^68828563 is an apocalyptic number.

68828563 is a deficient number, since it is larger than the sum of its proper divisors (4048757).

68828563 is a wasteful number, since it uses less digits than its factorization.

68828563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048756.

The product of its digits is 552960, while the sum is 46.

The square root of 68828563 is about 8296.2981503801. The cubic root of 68828563 is about 409.8166203522.

The spelling of 68828563 in words is "sixty-eight million, eight hundred twenty-eight thousand, five hundred sixty-three".