68071563 has 16 divisors (see below), whose sum is σ = 115253760. Its totient is φ = 38897928.

The previous prime is 68071489. The next prime is 68071583. The reversal of 68071563 is 36517086.

It is not a de Polignac number, because 68071563 - 2⁹ = 68071051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68071583) 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 15 ways as a sum of consecutive naturals, for example, 179895 + ... + 180272.

It is an arithmetic number, because the mean of its divisors is an integer number (7203360).

Almost surely, 2^68071563 is an apocalyptic number.

68071563 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

68071563 is a deficient number, since it is larger than the sum of its proper divisors (47182197).

68071563 is a wasteful number, since it uses less digits than its factorization.

68071563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360183 (or 360177 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 68071563 is about 8250.5492544436. The cubic root of 68071563 is about 408.3086440531.

The spelling of 68071563 in words is "sixty-eight million, seventy-one thousand, five hundred sixty-three".