68075563 has 4 divisors (see below), whose sum is σ = 68398408. Its totient is φ = 67752720.

The previous prime is 68075543. The next prime is 68075587. The reversal of 68075563 is 36557086.

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 68075563 - 2¹⁷ = 67944491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68075533) 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, 161106 + ... + 161527.

It is an arithmetic number, because the mean of its divisors is an integer number (17099602).

Almost surely, 2^68075563 is an apocalyptic number.

68075563 is a deficient number, since it is larger than the sum of its proper divisors (322845).

68075563 is a wasteful number, since it uses less digits than its factorization.

68075563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322844.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 68075563 is about 8250.7916589864. The cubic root of 68075563 is about 408.3166415316.

The spelling of 68075563 in words is "sixty-eight million, seventy-five thousand, five hundred sixty-three".