68351961 has 8 divisors (see below), whose sum is σ = 93358944. Its totient is φ = 44456480.

The previous prime is 68351957. The next prime is 68351989. The reversal of 68351961 is 16915386.

68351961 = 233² + 234² + ... + 601².

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

It is a cyclic number.

It is not a de Polignac number, because 68351961 - 2² = 68351957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68351761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277731 + ... + 277976.

It is an arithmetic number, because the mean of its divisors is an integer number (11669868).

Almost surely, 2^68351961 is an apocalyptic number.

It is an amenable number.

68351961 is a deficient number, since it is larger than the sum of its proper divisors (25006983).

68351961 is a wasteful number, since it uses less digits than its factorization.

68351961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555751.

The product of its digits is 38880, while the sum is 39.

The square root of 68351961 is about 8267.5244783430. The cubic root of 68351961 is about 408.8685062593.

The spelling of 68351961 in words is "sixty-eight million, three hundred fifty-one thousand, nine hundred sixty-one".