679779972 has 48 divisors (see below), whose sum is σ = 1772628480. Its totient is φ = 225277344.

The previous prime is 679779949. The next prime is 679779979. The reversal of 679779972 is 279977976.

It is not an unprimeable number, because it can be changed into a prime (679779979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 493 + ... + 36875.

It is an arithmetic number, because the mean of its divisors is an integer number (36929760).

Almost surely, 2^679779972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679779972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (886314240).

679779972 is an abundant number, since it is smaller than the sum of its proper divisors (1092848508).

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

679779972 is a wasteful number, since it uses less digits than its factorization.

679779972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36569 (or 36561 counting only the distinct ones).

The product of its digits is 21003948, while the sum is 63.

The square root of 679779972 is about 26072.5904351677. The cubic root of 679779972 is about 879.2710785491.

The spelling of 679779972 in words is "six hundred seventy-nine million, seven hundred seventy-nine thousand, nine hundred seventy-two".