68705897 has 8 divisors (see below), whose sum is σ = 74110344. Its totient is φ = 63318528.

The previous prime is 68705867. The next prime is 68705927. The reversal of 68705897 is 79850786.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68705867) and next prime (68705927).

It can be written as a sum of positive squares in 4 ways, for example, as 3031081 + 65674816 = 1741^2 + 8104^2 .

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

It is not a de Polignac number, because 68705897 - 2²⁶ = 1597033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68705867) 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, 4823 + ... + 12675.

It is an arithmetic number, because the mean of its divisors is an integer number (9263793).

Almost surely, 2^68705897 is an apocalyptic number.

It is an amenable number.

68705897 is a deficient number, since it is larger than the sum of its proper divisors (5404447).

68705897 is a wasteful number, since it uses less digits than its factorization.

68705897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8539.

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 68705897 is about 8288.9020382678. The cubic root of 68705897 is about 409.5730177112.

The spelling of 68705897 in words is "sixty-eight million, seven hundred five thousand, eight hundred ninety-seven".