68453897 has 4 divisors (see below), whose sum is σ = 68517396. Its totient is φ = 68390400.

The previous prime is 68453867. The next prime is 68453909. The reversal of 68453897 is 79835486.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47623801 + 20830096 = 6901^2 + 4564^2 .

It is a cyclic number.

It is not a de Polignac number, because 68453897 - 2²⁰ = 67405321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68453837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30104 + ... + 32297.

It is an arithmetic number, because the mean of its divisors is an integer number (17129349).

Almost surely, 2^68453897 is an apocalyptic number.

It is an amenable number.

68453897 is a deficient number, since it is larger than the sum of its proper divisors (63499).

68453897 is a wasteful number, since it uses less digits than its factorization.

68453897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63498.

The product of its digits is 1451520, while the sum is 50.

The square root of 68453897 is about 8273.6870257461. The cubic root of 68453897 is about 409.0716592618.

The spelling of 68453897 in words is "sixty-eight million, four hundred fifty-three thousand, eight hundred ninety-seven".