68508811 has 6 divisors (see below), whose sum is σ = 79693980. Its totient is φ = 58721796.

The previous prime is 68508809. The next prime is 68508857. The reversal of 68508811 is 11880586.

It is not a de Polignac number, because 68508811 - 2¹ = 68508809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68508871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 699021 + ... + 699118.

It is an arithmetic number, because the mean of its divisors is an integer number (13282330).

Almost surely, 2^68508811 is an apocalyptic number.

68508811 is a deficient number, since it is larger than the sum of its proper divisors (11185169).

68508811 is a wasteful number, since it uses less digits than its factorization.

68508811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398153 (or 1398146 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 37.

The square root of 68508811 is about 8277.0049534841. The cubic root of 68508811 is about 409.1810163518.

The spelling of 68508811 in words is "sixty-eight million, five hundred eight thousand, eight hundred eleven".