68210407 has 4 divisors (see below), whose sum is σ = 70562520. Its totient is φ = 65858296.

The previous prime is 68210381. The next prime is 68210423. The reversal of 68210407 is 70401286.

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 68210407 - 2⁷ = 68210279 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 (68210507) 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, 1176013 + ... + 1176070.

It is an arithmetic number, because the mean of its divisors is an integer number (17640630).

Almost surely, 2^68210407 is an apocalyptic number.

68210407 is a deficient number, since it is larger than the sum of its proper divisors (2352113).

68210407 is a wasteful number, since it uses less digits than its factorization.

68210407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352112.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 68210407 is about 8258.9591959278. The cubic root of 68210407 is about 408.5860614384.

The spelling of 68210407 in words is "sixty-eight million, two hundred ten thousand, four hundred seven".