681230647667 has 8 divisors (see below), whose sum is σ = 682112428800. Its totient is φ = 680349422664.

The previous prime is 681230647633. The next prime is 681230647703. The reversal of 681230647667 is 766746032186.

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 681230647667 - 2³⁸ = 406352740723 is a prime.

It is a super-3 number, since 3×681230647667³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681230847667) 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, 2340968 + ... + 2615834.

It is an arithmetic number, because the mean of its divisors is an integer number (85264053600).

Almost surely, 2^681230647667 is an apocalyptic number.

681230647667 is a deficient number, since it is larger than the sum of its proper divisors (881781133).

681230647667 is a wasteful number, since it uses less digits than its factorization.

681230647667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278065.

The product of its (nonzero) digits is 12192768, while the sum is 56.

The spelling of 681230647667 in words is "six hundred eighty-one billion, two hundred thirty million, six hundred forty-seven thousand, six hundred sixty-seven".