68890586 has 4 divisors (see below), whose sum is σ = 103335882. Its totient is φ = 34445292.

The previous prime is 68890571. The next prime is 68890603. The reversal of 68890586 is 68509886.

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

It can be written as a sum of positive squares in only one way, i.e., 56535361 + 12355225 = 7519^2 + 3515^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17222645 + ... + 17222648.

Almost surely, 2^68890586 is an apocalyptic number.

68890586 is a deficient number, since it is larger than the sum of its proper divisors (34445296).

68890586 is a wasteful number, since it uses less digits than its factorization.

68890586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34445295.

The product of its (nonzero) digits is 829440, while the sum is 50.

The square root of 68890586 is about 8300.0353011297. The cubic root of 68890586 is about 409.9396817869.

The spelling of 68890586 in words is "sixty-eight million, eight hundred ninety thousand, five hundred eighty-six".