668735454147 has 8 divisors (see below), whose sum is σ = 892372783440. Its totient is φ = 445460880480.

The previous prime is 668735454143. The next prime is 668735454151. The reversal of 668735454147 is 741454537866.

It is an interprime number because it is at equal distance from previous prime (668735454143) and next prime (668735454151).

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

It is not a de Polignac number, because 668735454147 - 2² = 668735454143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (668735454143) 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, 90684604 + ... + 90691977.

It is an arithmetic number, because the mean of its divisors is an integer number (111546597930).

Almost surely, 2^668735454147 is an apocalyptic number.

668735454147 is a deficient number, since it is larger than the sum of its proper divisors (223637329293).

668735454147 is a wasteful number, since it uses less digits than its factorization.

668735454147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181377813.

The product of its digits is 67737600, while the sum is 60.

The spelling of 668735454147 in words is "six hundred sixty-eight billion, seven hundred thirty-five million, four hundred fifty-four thousand, one hundred forty-seven".