80863785 has 32 divisors (see below), whose sum is σ = 144132480. Its totient is φ = 43015104.

The previous prime is 80863763. The next prime is 80863801. The reversal of 80863785 is 58736808.

80863785 is a `hidden beast` number, since 8 + 0 + 8 + 637 + 8 + 5 = 666.

It is not a de Polignac number, because 80863785 - 2⁹ = 80863273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 80863785.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91767 + ... + 92643.

It is an arithmetic number, because the mean of its divisors is an integer number (4504140).

Almost surely, 2^80863785 is an apocalyptic number.

It is an amenable number.

80863785 is a deficient number, since it is larger than the sum of its proper divisors (63268695).

80863785 is a wasteful number, since it uses less digits than its factorization.

80863785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574 (or 1568 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 80863785 is about 8992.4293158189. The cubic root of 80863785 is about 432.4321967061.

The spelling of 80863785 in words is "eighty million, eight hundred sixty-three thousand, seven hundred eighty-five".