80284661 has 2 divisors, whose sum is σ = 80284662. Its totient is φ = 80284660.

The previous prime is 80284643. The next prime is 80284667. The reversal of 80284661 is 16648208.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77545636 + 2739025 = 8806^2 + 1655^2 .

It is a cyclic number.

It is not a de Polignac number, because 80284661 - 2¹⁴ = 80268277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80284667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40142330 + 40142331.

It is an arithmetic number, because the mean of its divisors is an integer number (40142331).

Almost surely, 2^80284661 is an apocalyptic number.

It is an amenable number.

80284661 is a deficient number, since it is larger than the sum of its proper divisors (1).

80284661 is an equidigital number, since it uses as much as digits as its factorization.

80284661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 80284661 is about 8960.1708131040. The cubic root of 80284661 is about 431.3974026396.

The spelling of 80284661 in words is "eighty million, two hundred eighty-four thousand, six hundred sixty-one".