68959571 has 4 divisors (see below), whose sum is σ = 69345000. Its totient is φ = 68574144.

The previous prime is 68959567. The next prime is 68959643. The reversal of 68959571 is 17595986.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 68959571 - 2² = 68959567 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68959511) 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 3 ways as a sum of consecutive naturals, for example, 192446 + ... + 192803.

It is an arithmetic number, because the mean of its divisors is an integer number (17336250).

Almost surely, 2^68959571 is an apocalyptic number.

68959571 is a deficient number, since it is larger than the sum of its proper divisors (385429).

68959571 is a wasteful number, since it uses less digits than its factorization.

68959571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385428.

The product of its digits is 680400, while the sum is 50.

The square root of 68959571 is about 8304.1899665169. The cubic root of 68959571 is about 410.0764699721.

The spelling of 68959571 in words is "sixty-eight million, nine hundred fifty-nine thousand, five hundred seventy-one".