80003661 has 16 divisors (see below), whose sum is σ = 113288640. Its totient is φ = 50077440.

The previous prime is 80003647. The next prime is 80003681. The reversal of 80003661 is 16630008.

It is not a de Polignac number, because 80003661 - 2⁹ = 80003149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80003611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231 + ... + 12651.

It is an arithmetic number, because the mean of its divisors is an integer number (7080540).

Almost surely, 2^80003661 is an apocalyptic number.

It is an amenable number.

80003661 is a deficient number, since it is larger than the sum of its proper divisors (33284979).

80003661 is a wasteful number, since it uses less digits than its factorization.

80003661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12556.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 80003661 is about 8944.4765637795. The cubic root of 80003661 is about 430.8935107273.

Adding to 80003661 its reverse (16630008), we get a palindrome (96633669).

The spelling of 80003661 in words is "eighty million, three thousand, six hundred sixty-one".