80388646 has 16 divisors (see below), whose sum is σ = 130264848. Its totient is φ = 36986400.

The previous prime is 80388643. The next prime is 80388661. The reversal of 80388646 is 64688308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80388643) 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 7 ways as a sum of consecutive naturals, for example, 3936 + ... + 13276.

It is an arithmetic number, because the mean of its divisors is an integer number (8141553).

Almost surely, 2^80388646 is an apocalyptic number.

80388646 is a deficient number, since it is larger than the sum of its proper divisors (49876202).

80388646 is a wasteful number, since it uses less digits than its factorization.

80388646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9687.

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 80388646 is about 8965.9715591786. The cubic root of 80388646 is about 431.5835714759.

The spelling of 80388646 in words is "eighty million, three hundred eighty-eight thousand, six hundred forty-six".