68321397 has 8 divisors (see below), whose sum is σ = 95889760. Its totient is φ = 43150320.

The previous prime is 68321389. The next prime is 68321401. The reversal of 68321397 is 79312386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68321397 - 2³ = 68321389 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 (68321387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599254 + ... + 599367.

It is an arithmetic number, because the mean of its divisors is an integer number (11986220).

Almost surely, 2^68321397 is an apocalyptic number.

It is an amenable number.

68321397 is a deficient number, since it is larger than the sum of its proper divisors (27568363).

68321397 is a wasteful number, since it uses less digits than its factorization.

68321397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198643.

The product of its digits is 54432, while the sum is 39.

The square root of 68321397 is about 8265.6758344373. The cubic root of 68321397 is about 408.8075544839.

The spelling of 68321397 in words is "sixty-eight million, three hundred twenty-one thousand, three hundred ninety-seven".