78641803 has 8 divisors (see below), whose sum is σ = 79365888. Its totient is φ = 77921064.

The previous prime is 78641777. The next prime is 78641819. The reversal of 78641803 is 30814687.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78641803 - 2⁹ = 78641291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78641603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73450 + ... + 74512.

It is an arithmetic number, because the mean of its divisors is an integer number (9920736).

Almost surely, 2^78641803 is an apocalyptic number.

78641803 is a deficient number, since it is larger than the sum of its proper divisors (724085).

78641803 is a wasteful number, since it uses less digits than its factorization.

78641803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 78641803 is about 8868.0213689413. The cubic root of 78641803 is about 428.4345511511.

The spelling of 78641803 in words is "seventy-eight million, six hundred forty-one thousand, eight hundred three".