68820895 has 32 divisors (see below), whose sum is σ = 98086464. Its totient is φ = 45696000.

The previous prime is 68820883. The next prime is 68820901. The reversal of 68820895 is 59802886.

It is a happy number.

It is not a de Polignac number, because 68820895 - 2¹⁵ = 68788127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71739 + ... + 72691.

It is an arithmetic number, because the mean of its divisors is an integer number (3065202).

Almost surely, 2^68820895 is an apocalyptic number.

68820895 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68820895 is a deficient number, since it is larger than the sum of its proper divisors (29265569).

68820895 is a wasteful number, since it uses less digits than its factorization.

68820895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 68820895 is about 8295.8360036828. The cubic root of 68820895 is about 409.8014009413.

Subtracting from 68820895 its reverse (59802886), we obtain a square (9018009 = 3003²).

The spelling of 68820895 in words is "sixty-eight million, eight hundred twenty thousand, eight hundred ninety-five".