679791740 has 12 divisors (see below), whose sum is σ = 1427562696. Its totient is φ = 271916688.

The previous prime is 679791737. The next prime is 679791743. The reversal of 679791740 is 47197976.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (679791737) and next prime (679791743).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679791743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16994774 + ... + 16994813.

It is an arithmetic number, because the mean of its divisors is an integer number (118963558).

Almost surely, 2^679791740 is an apocalyptic number.

It is an amenable number.

679791740 is an abundant number, since it is smaller than the sum of its proper divisors (747770956).

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

679791740 is a wasteful number, since it uses less digits than its factorization.

679791740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33989596 (or 33989594 counting only the distinct ones).

The product of its (nonzero) digits is 666792, while the sum is 50.

The square root of 679791740 is about 26072.8161118050. The cubic root of 679791740 is about 879.2761523489.

The spelling of 679791740 in words is "six hundred seventy-nine million, seven hundred ninety-one thousand, seven hundred forty".