68897047 has 4 divisors (see below), whose sum is σ = 69529240. Its totient is φ = 68264856.

The previous prime is 68896991. The next prime is 68897053. The reversal of 68897047 is 74079886.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68897047 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 (68897947) 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, 315933 + ... + 316150.

It is an arithmetic number, because the mean of its divisors is an integer number (17382310).

Almost surely, 2^68897047 is an apocalyptic number.

68897047 is a deficient number, since it is larger than the sum of its proper divisors (632193).

68897047 is a wasteful number, since it uses less digits than its factorization.

68897047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632192.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 68897047 is about 8300.4245072165. The cubic root of 68897047 is about 409.9524969751.

The spelling of 68897047 in words is "sixty-eight million, eight hundred ninety-seven thousand, forty-seven".