68375997 has 12 divisors (see below), whose sum is σ = 102171420. Its totient is φ = 44011968.

The previous prime is 68375969. The next prime is 68375999. The reversal of 68375997 is 79957386.

It can be written as a sum of positive squares in 2 ways, for example, as 13111641 + 55264356 = 3621^2 + 7434^2 .

It is not a de Polignac number, because 68375997 - 2⁶ = 68375933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68375999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130728 + ... + 131249.

It is an arithmetic number, because the mean of its divisors is an integer number (8514285).

Almost surely, 2^68375997 is an apocalyptic number.

It is an amenable number.

68375997 is a deficient number, since it is larger than the sum of its proper divisors (33795423).

68375997 is a wasteful number, since it uses less digits than its factorization.

68375997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262012 (or 262009 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 68375997 is about 8268.9779900542. The cubic root of 68375997 is about 408.9164269117.

The spelling of 68375997 in words is "sixty-eight million, three hundred seventy-five thousand, nine hundred ninety-seven".