679400727940 has 24 divisors (see below), whose sum is σ = 1556445304512. Its totient is φ = 247054810080.

The previous prime is 679400727923. The next prime is 679400727949. The reversal of 679400727940 is 49727004976.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is not an unprimeable number, because it can be changed into a prime (679400727949) 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, 1544092344 + ... + 1544092783.

It is an arithmetic number, because the mean of its divisors is an integer number (64851887688).

Almost surely, 2^679400727940 is an apocalyptic number.

It is an amenable number.

679400727940 is an abundant number, since it is smaller than the sum of its proper divisors (877044576572).

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

679400727940 is a wasteful number, since it uses less digits than its factorization.

679400727940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088185147 (or 3088185145 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 55.

The spelling of 679400727940 in words is "six hundred seventy-nine billion, four hundred million, seven hundred twenty-seven thousand, nine hundred forty".