68182121 has 16 divisors (see below), whose sum is σ = 82840320. Its totient is φ = 54781440.

The previous prime is 68182069. The next prime is 68182123. The reversal of 68182121 is 12128186.

It is a de Polignac number, because none of the positive numbers 2^k-68182121 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68182123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32420 + ... + 34458.

It is an arithmetic number, because the mean of its divisors is an integer number (5177520).

Almost surely, 2^68182121 is an apocalyptic number.

It is an amenable number.

68182121 is a deficient number, since it is larger than the sum of its proper divisors (14658199).

68182121 is a wasteful number, since it uses less digits than its factorization.

68182121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344.

The product of its digits is 1536, while the sum is 29.

The square root of 68182121 is about 8257.2465749789. The cubic root of 68182121 is about 408.5295751252.

The spelling of 68182121 in words is "sixty-eight million, one hundred eighty-two thousand, one hundred twenty-one".