68121670 has 8 divisors (see below), whose sum is σ = 122619024. Its totient is φ = 27248664.

The previous prime is 68121649. The next prime is 68121679. The reversal of 68121670 is 7612186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68121679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3406074 + ... + 3406093.

It is an arithmetic number, because the mean of its divisors is an integer number (15327378).

Almost surely, 2^68121670 is an apocalyptic number.

68121670 is a deficient number, since it is larger than the sum of its proper divisors (54497354).

68121670 is a wasteful number, since it uses less digits than its factorization.

68121670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6812174.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 68121670 is about 8253.5852815610. The cubic root of 68121670 is about 408.4088038576.

The spelling of 68121670 in words is "sixty-eight million, one hundred twenty-one thousand, six hundred seventy".