679801647 has 16 divisors (see below), whose sum is σ = 1057030400. Its totient is φ = 388457496.

The previous prime is 679801643. The next prime is 679801649. The reversal of 679801647 is 746108976.

679801647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 679801647 - 2² = 679801643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 679801596 and 679801605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679801643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329293 + ... + 331350.

It is an arithmetic number, because the mean of its divisors is an integer number (66064400).

Almost surely, 2^679801647 is an apocalyptic number.

679801647 is a deficient number, since it is larger than the sum of its proper divisors (377228753).

679801647 is an equidigital number, since it uses as much as digits as its factorization.

679801647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660667 (or 660653 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 679801647 is about 26073.0060982619. The cubic root of 679801647 is about 879.2804237289.

The spelling of 679801647 in words is "six hundred seventy-nine million, eight hundred one thousand, six hundred forty-seven".