68121485 has 8 divisors (see below), whose sum is σ = 82469880. Its totient is φ = 54014464.

The previous prime is 68121467. The next prime is 68121497. The reversal of 68121485 is 58412186.

It can be written as a sum of positive squares in 4 ways, for example, as 4791721 + 63329764 = 2189^2 + 7958^2 .

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 68121485 - 2⁶ = 68121421 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59720 + ... + 60849.

It is an arithmetic number, because the mean of its divisors is an integer number (10308735).

Almost surely, 2^68121485 is an apocalyptic number.

It is an amenable number.

68121485 is a deficient number, since it is larger than the sum of its proper divisors (14348395).

68121485 is a wasteful number, since it uses less digits than its factorization.

68121485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120687.

The product of its digits is 15360, while the sum is 35.

The square root of 68121485 is about 8253.5740743026. The cubic root of 68121485 is about 408.4084341481.

The spelling of 68121485 in words is "sixty-eight million, one hundred twenty-one thousand, four hundred eighty-five".