679378761 has 24 divisors (see below), whose sum is σ = 1030910400. Its totient is φ = 430299936.

The previous prime is 679378723. The next prime is 679378783. The reversal of 679378761 is 167873976.

It is not a de Polignac number, because 679378761 - 2⁶ = 679378697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 679378698 and 679378707.

It is not an unprimeable number, because it can be changed into a prime (679377761) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19830 + ... + 41856.

It is an arithmetic number, because the mean of its divisors is an integer number (42954600).

Almost surely, 2^679378761 is an apocalyptic number.

It is an amenable number.

679378761 is a deficient number, since it is larger than the sum of its proper divisors (351531639).

679378761 is a wasteful number, since it uses less digits than its factorization.

679378761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22205 (or 22202 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The square root of 679378761 is about 26064.8951849034. The cubic root of 679378761 is about 879.0980604800.

The spelling of 679378761 in words is "six hundred seventy-nine million, three hundred seventy-eight thousand, seven hundred sixty-one".