80659674 has 36 divisors (see below), whose sum is σ = 184459626. Its totient is φ = 25469424.

The previous prime is 80659619. The next prime is 80659729. The reversal of 80659674 is 47695608.

It is an interprime number because it is at equal distance from previous prime (80659619) and next prime (80659729).

It can be written as a sum of positive squares in only one way, i.e., 74080449 + 6579225 = 8607^2 + 2565^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 292 + ... + 12704.

Almost surely, 2^80659674 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80659674, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92229813).

80659674 is an abundant number, since it is smaller than the sum of its proper divisors (103799952).

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

80659674 is a wasteful number, since it uses less digits than its factorization.

80659674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12459 (or 12437 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 80659674 is about 8981.0730984666. The cubic root of 80659674 is about 432.0680512652.

The spelling of 80659674 in words is "eighty million, six hundred fifty-nine thousand, six hundred seventy-four".