68890607 has 4 divisors (see below), whose sum is σ = 69762720. Its totient is φ = 68018496.

The previous prime is 68890603. The next prime is 68890621. The reversal of 68890607 is 70609886.

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 68890607 - 2² = 68890603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68890603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435938 + ... + 436095.

It is an arithmetic number, because the mean of its divisors is an integer number (17440680).

Almost surely, 2^68890607 is an apocalyptic number.

68890607 is a deficient number, since it is larger than the sum of its proper divisors (872113).

68890607 is an equidigital number, since it uses as much as digits as its factorization.

68890607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872112.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 68890607 is about 8300.0365661845. The cubic root of 68890607 is about 409.9397234410.

The spelling of 68890607 in words is "sixty-eight million, eight hundred ninety thousand, six hundred seven".