80690 has 8 divisors (see below), whose sum is σ = 145260. Its totient is φ = 32272.

The previous prime is 80687. The next prime is 80701. The reversal of 80690 is 9608.

80690 = 163² + 164² + 165².

It can be written as a sum of positive squares in 2 ways, for example, as 66049 + 14641 = 257^2 + 121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×80690² = 13021752200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4025 + ... + 4044.

2⁸⁰⁶⁹⁰ is an apocalyptic number.

80690 is a deficient number, since it is larger than the sum of its proper divisors (64570).

80690 is a wasteful number, since it uses less digits than its factorization.

80690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8076.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 80690 is about 284.0598528480. The cubic root of 80690 is about 43.2122193372.

The spelling of 80690 in words is "eighty thousand, six hundred ninety".