68546470646 has 8 divisors (see below), whose sum is σ = 102828683640. Its totient is φ = 34270242768.

The previous prime is 68546470543. The next prime is 68546470651. The reversal of 68546470646 is 64607464586.

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

It is a junction number, because it is equal to n+sod(n) for n = 68546470591 and 68546470600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1467536 + ... + 1513523.

It is an arithmetic number, because the mean of its divisors is an integer number (12853585455).

Almost surely, 2^68546470646 is an apocalyptic number.

68546470646 is a deficient number, since it is larger than the sum of its proper divisors (34282212994).

68546470646 is a wasteful number, since it uses less digits than its factorization.

68546470646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2992558.

The product of its (nonzero) digits is 23224320, while the sum is 56.

The spelling of 68546470646 in words is "sixty-eight billion, five hundred forty-six million, four hundred seventy thousand, six hundred forty-six".