68611069 has 4 divisors (see below), whose sum is σ = 68652220. Its totient is φ = 68569920.

The previous prime is 68611057. The next prime is 68611087. The reversal of 68611069 is 96011686.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11985444 + 56625625 = 3462^2 + 7525^2 .

It is a cyclic number.

It is not a de Polignac number, because 68611069 - 2⁹ = 68610557 is a prime.

It is a super-2 number, since 2×68611069² = 9414957578645522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68611009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17964 + ... + 21445.

It is an arithmetic number, because the mean of its divisors is an integer number (17163055).

Almost surely, 2^68611069 is an apocalyptic number.

It is an amenable number.

68611069 is a deficient number, since it is larger than the sum of its proper divisors (41151).

68611069 is a wasteful number, since it uses less digits than its factorization.

68611069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41150.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 68611069 is about 8283.1798845612. The cubic root of 68611069 is about 409.3844998203.

The spelling of 68611069 in words is "sixty-eight million, six hundred eleven thousand, sixty-nine".