68563511 has 8 divisors (see below), whose sum is σ = 71124480. Its totient is φ = 66015712.

The previous prime is 68563489. The next prime is 68563531. The reversal of 68563511 is 11536586.

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 68563511 - 2⁶ = 68563447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68563531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8021 + ... + 14193.

It is an arithmetic number, because the mean of its divisors is an integer number (8890560).

Almost surely, 2^68563511 is an apocalyptic number.

68563511 is a deficient number, since it is larger than the sum of its proper divisors (2560969).

68563511 is a wasteful number, since it uses less digits than its factorization.

68563511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6585.

The product of its digits is 21600, while the sum is 35.

The square root of 68563511 is about 8280.3086295138. The cubic root of 68563511 is about 409.2898891960.

The spelling of 68563511 in words is "sixty-eight million, five hundred sixty-three thousand, five hundred eleven".