68440446674 has 8 divisors (see below), whose sum is σ = 105435282828. Its totient is φ = 33295352400.

The previous prime is 68440446671. The next prime is 68440446691. The reversal of 68440446674 is 47664404486.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68117346049 + 323100625 = 260993^2 + 17975^2 .

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

It is not an unprimeable number, because it can be changed into a prime (68440446671) 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, 462435377 + ... + 462435524.

Almost surely, 2^68440446674 is an apocalyptic number.

68440446674 is a deficient number, since it is larger than the sum of its proper divisors (36994836154).

68440446674 is a wasteful number, since it uses less digits than its factorization.

68440446674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924870940.

The product of its (nonzero) digits is 12386304, while the sum is 53.

The spelling of 68440446674 in words is "sixty-eight billion, four hundred forty million, four hundred forty-six thousand, six hundred seventy-four".