80661384 has 48 divisors (see below), whose sum is σ = 229959600. Its totient is φ = 25471584.

The previous prime is 80661359. The next prime is 80661409. The reversal of 80661384 is 48316608.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80661359) and next prime (80661409).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28114 + ... + 30849.

It is an arithmetic number, because the mean of its divisors is an integer number (4790825).

Almost surely, 2^80661384 is an apocalyptic number.

It is an amenable number.

80661384 is an abundant number, since it is smaller than the sum of its proper divisors (149298216).

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

80661384 is a wasteful number, since it uses less digits than its factorization.

80661384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58994 (or 58987 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 80661384 is about 8981.1682981670. The cubic root of 80661384 is about 432.0711045511.

The spelling of 80661384 in words is "eighty million, six hundred sixty-one thousand, three hundred eighty-four".