679703040 has 120 divisors (see below), whose sum is σ = 2354082588. Its totient is φ = 181248000.

The previous prime is 679703039. The next prime is 679703099. The reversal of 679703040 is 40307976.

It can be written as a sum of positive squares in 2 ways, for example, as 669360384 + 10342656 = 25872^2 + 3216^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 679702986 and 679703004.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8290 + ... + 37790.

Almost surely, 2^679703040 is an apocalyptic number.

679703040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679703040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1177041294).

679703040 is an abundant number, since it is smaller than the sum of its proper divisors (1674379548).

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

679703040 is a wasteful number, since it uses less digits than its factorization.

679703040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29530 (or 29511 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 679703040 is about 26071.1150509525. The cubic root of 679703040 is about 879.2379077010.

The spelling of 679703040 in words is "six hundred seventy-nine million, seven hundred three thousand, forty".