207678670668 has 72 divisors (see below), whose sum is σ = 600185843712. Its totient is φ = 59314486752.

The previous prime is 207678670663. The next prime is 207678670709. The reversal of 207678670668 is 866076876702.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (207678670663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 523771 + ... + 830477.

It is an arithmetic number, because the mean of its divisors is an integer number (8335914496).

Almost surely, 2^207678670668 is an apocalyptic number.

207678670668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

207678670668 is an abundant number, since it is smaller than the sum of its proper divisors (392507173044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

207678670668 is a wasteful number, since it uses less digits than its factorization.

207678670668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309411 (or 309406 counting only the distinct ones).

The product of its (nonzero) digits is 56899584, while the sum is 63.

The spelling of 207678670668 in words is "two hundred seven billion, six hundred seventy-eight million, six hundred seventy thousand, six hundred sixty-eight".