679454740 has 12 divisors (see below), whose sum is σ = 1426854996. Its totient is φ = 271781888.

The previous prime is 679454729. The next prime is 679454749. The reversal of 679454740 is 47454976.

It can be written as a sum of positive squares in 2 ways, for example, as 97101316 + 582353424 = 9854^2 + 24132^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679454749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16986349 + ... + 16986388.

It is an arithmetic number, because the mean of its divisors is an integer number (118904583).

Almost surely, 2^679454740 is an apocalyptic number.

It is an amenable number.

679454740 is an abundant number, since it is smaller than the sum of its proper divisors (747400256).

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

679454740 is a wasteful number, since it uses less digits than its factorization.

679454740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33972746 (or 33972744 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 46.

The square root of 679454740 is about 26066.3526409047. The cubic root of 679454740 is about 879.1308308606.

The spelling of 679454740 in words is "six hundred seventy-nine million, four hundred fifty-four thousand, seven hundred forty".