68897895 has 32 divisors (see below), whose sum is σ = 126593280. Its totient is φ = 31645440.

The previous prime is 68897887. The next prime is 68897897. The reversal of 68897895 is 59879886.

It is a happy number.

It is not a de Polignac number, because 68897895 - 2³ = 68897887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68897897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7854 + ... + 14123.

It is an arithmetic number, because the mean of its divisors is an integer number (3956040).

Almost surely, 2^68897895 is an apocalyptic number.

68897895 is a deficient number, since it is larger than the sum of its proper divisors (57695385).

68897895 is a wasteful number, since it uses less digits than its factorization.

68897895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22015.

The product of its digits is 8709120, while the sum is 60.

The square root of 68897895 is about 8300.4755887841. The cubic root of 68897895 is about 409.9541788967.

Subtracting from 68897895 its reverse (59879886), we obtain a square (9018009 = 3003²).

The spelling of 68897895 in words is "sixty-eight million, eight hundred ninety-seven thousand, eight hundred ninety-five".