80866784 has 12 divisors (see below), whose sum is σ = 159206544. Its totient is φ = 40433376.

The previous prime is 80866769. The next prime is 80866787. The reversal of 80866784 is 48766808.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80866787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1263512 + ... + 1263575.

It is an arithmetic number, because the mean of its divisors is an integer number (13267212).

Almost surely, 2^80866784 is an apocalyptic number.

It is an amenable number.

80866784 is a deficient number, since it is larger than the sum of its proper divisors (78339760).

80866784 is a wasteful number, since it uses less digits than its factorization.

80866784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527097 (or 2527089 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 80866784 is about 8992.5960656531. The cubic root of 80866784 is about 432.4375425196.

The spelling of 80866784 in words is "eighty million, eight hundred sixty-six thousand, seven hundred eighty-four".