679944510 has 128 divisors (see below), whose sum is σ = 2082585600. Its totient is φ = 154638720.

The previous prime is 679944487. The next prime is 679944511. The reversal of 679944510 is 15449976.

679944510 is a `hidden beast` number, since 6 + 7 + 99 + 44 + 510 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679944511) 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 63 ways as a sum of consecutive naturals, for example, 432025 + ... + 433595.

It is an arithmetic number, because the mean of its divisors is an integer number (16270200).

Almost surely, 2^679944510 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679944510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1041292800).

679944510 is an abundant number, since it is smaller than the sum of its proper divisors (1402641090).

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

679944510 is a wasteful number, since it uses less digits than its factorization.

679944510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823 (or 1817 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 679944510 is about 26075.7456269231. The cubic root of 679944510 is about 879.3420141654.

The spelling of 679944510 in words is "six hundred seventy-nine million, nine hundred forty-four thousand, five hundred ten".