80643676 has 12 divisors (see below), whose sum is σ = 148554280. Its totient is φ = 38199600.

The previous prime is 80643671. The next prime is 80643677. The reversal of 80643676 is 67634608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80643671) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 530475 + ... + 530626.

Almost surely, 2^80643676 is an apocalyptic number.

It is an amenable number.

80643676 is a deficient number, since it is larger than the sum of its proper divisors (67910604).

80643676 is a wasteful number, since it uses less digits than its factorization.

80643676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061124 (or 1061122 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 80643676 is about 8980.1824034927. The cubic root of 80643676 is about 432.0394839883.

The spelling of 80643676 in words is "eighty million, six hundred forty-three thousand, six hundred seventy-six".