679926 has 32 divisors (see below), whose sum is σ = 1532160. Its totient is φ = 199584.

The previous prime is 679919. The next prime is 679933. The reversal of 679926 is 629976.

It is an interprime number because it is at equal distance from previous prime (679919) and next prime (679933).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1605 + ... + 1983.

It is an arithmetic number, because the mean of its divisors is an integer number (47880).

2⁶⁷⁹⁹²⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679926, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (766080).

679926 is an abundant number, since it is smaller than the sum of its proper divisors (852234).

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

679926 is a wasteful number, since it uses less digits than its factorization.

679926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420.

The product of its digits is 40824, while the sum is 39.

The square root of 679926 is about 824.5762548121. The cubic root of 679926 is about 87.9334034706.

The spelling of 679926 in words is "six hundred seventy-nine thousand, nine hundred twenty-six".