80679726 has 40 divisors (see below), whose sum is σ = 181427400. Its totient is φ = 26797392.

The previous prime is 80679713. The next prime is 80679743. The reversal of 80679726 is 62797608.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 55825 + ... + 57251.

It is an arithmetic number, because the mean of its divisors is an integer number (4535685).

Almost surely, 2^80679726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80679726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90713700).

80679726 is an abundant number, since it is smaller than the sum of its proper divisors (100747674).

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

80679726 is a wasteful number, since it uses less digits than its factorization.

80679726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790 (or 1781 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 80679726 is about 8982.1893767611. The cubic root of 80679726 is about 432.1038523468.

The spelling of 80679726 in words is "eighty million, six hundred seventy-nine thousand, seven hundred twenty-six".