678349460497 has 8 divisors (see below), whose sum is σ = 730426140000. Its totient is φ = 627625422144.

The previous prime is 678349460443. The next prime is 678349460521. The reversal of 678349460497 is 794064943876.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-678349460497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678349460417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338159247 + ... + 338161252.

It is an arithmetic number, because the mean of its divisors is an integer number (91303267500).

Almost surely, 2^678349460497 is an apocalyptic number.

It is an amenable number.

678349460497 is a deficient number, since it is larger than the sum of its proper divisors (52076679503).

678349460497 is a wasteful number, since it uses less digits than its factorization.

678349460497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676320575.

The product of its (nonzero) digits is 219469824, while the sum is 67.

The spelling of 678349460497 in words is "six hundred seventy-eight billion, three hundred forty-nine million, four hundred sixty thousand, four hundred ninety-seven".