68408197 has 24 divisors (see below), whose sum is σ = 81786488. Its totient is φ = 56833920.

The previous prime is 68408191. The next prime is 68408239. The reversal of 68408197 is 79180486.

It can be written as a sum of positive squares in 4 ways, for example, as 527076 + 67881121 = 726^2 + 8239^2 .

It is not a de Polignac number, because 68408197 - 2¹⁹ = 67883909 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 (68408191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 246823 + ... + 247099.

Almost surely, 2^68408197 is an apocalyptic number.

It is an amenable number.

68408197 is a deficient number, since it is larger than the sum of its proper divisors (13378291).

68408197 is a wasteful number, since it uses less digits than its factorization.

68408197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 68408197 is about 8270.9247971433. The cubic root of 68408197 is about 408.9806065613.

The spelling of 68408197 in words is "sixty-eight million, four hundred eight thousand, one hundred ninety-seven".