68121597 has 4 divisors (see below), whose sum is σ = 90828800. Its totient is φ = 45414396.

The previous prime is 68121583. The next prime is 68121611. The reversal of 68121597 is 79512186.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (68121583) and next prime (68121611).

It is not a de Polignac number, because 68121597 - 2¹¹ = 68119549 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 (68121527) 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, 11353597 + ... + 11353602.

It is an arithmetic number, because the mean of its divisors is an integer number (22707200).

Almost surely, 2^68121597 is an apocalyptic number.

It is an amenable number.

68121597 is a deficient number, since it is larger than the sum of its proper divisors (22707203).

68121597 is a wasteful number, since it uses less digits than its factorization.

68121597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22707202.

The product of its digits is 30240, while the sum is 39.

The square root of 68121597 is about 8253.5808592392. The cubic root of 68121597 is about 408.4086579723.

The spelling of 68121597 in words is "sixty-eight million, one hundred twenty-one thousand, five hundred ninety-seven".