80028661 has 8 divisors (see below), whose sum is σ = 86388480. Its totient is φ = 73908912.

The previous prime is 80028649. The next prime is 80028667. The reversal of 80028661 is 16682008.

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

It is a cyclic number.

It is not a de Polignac number, because 80028661 - 2¹³ = 80020469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80028667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59325 + ... + 60658.

It is an arithmetic number, because the mean of its divisors is an integer number (10798560).

Almost surely, 2^80028661 is an apocalyptic number.

It is an amenable number.

80028661 is a deficient number, since it is larger than the sum of its proper divisors (6359819).

80028661 is a wasteful number, since it uses less digits than its factorization.

80028661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120035.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 80028661 is about 8945.8739651305. The cubic root of 80028661 is about 430.9383887398.

The spelling of 80028661 in words is "eighty million, twenty-eight thousand, six hundred sixty-one".