68396563 has 4 divisors (see below), whose sum is σ = 68643760. Its totient is φ = 68149368.

The previous prime is 68396557. The next prime is 68396567. The reversal of 68396563 is 36569386.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68396563 - 2⁹ = 68396051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68396567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123183 + ... + 123736.

It is an arithmetic number, because the mean of its divisors is an integer number (17160940).

Almost surely, 2^68396563 is an apocalyptic number.

68396563 is a deficient number, since it is larger than the sum of its proper divisors (247197).

68396563 is a wasteful number, since it uses less digits than its factorization.

68396563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247196.

The product of its digits is 699840, while the sum is 46.

The square root of 68396563 is about 8270.2214601545. The cubic root of 68396563 is about 408.9574204991.

The spelling of 68396563 in words is "sixty-eight million, three hundred ninety-six thousand, five hundred sixty-three".