78565003 has 8 divisors (see below), whose sum is σ = 85898736. Its totient is φ = 71263200.

The previous prime is 78564989. The next prime is 78565013. The reversal of 78565003 is 30056587.

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 78565003 - 2²¹ = 76467851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78565003.

It is not an unprimeable number, because it can be changed into a prime (78565013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2676 + ... + 12817.

It is an arithmetic number, because the mean of its divisors is an integer number (10737342).

Almost surely, 2^78565003 is an apocalyptic number.

78565003 is a deficient number, since it is larger than the sum of its proper divisors (7333733).

78565003 is a wasteful number, since it uses less digits than its factorization.

78565003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15965.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 78565003 is about 8863.6901457576. The cubic root of 78565003 is about 428.2950388767.

The spelling of 78565003 in words is "seventy-eight million, five hundred sixty-five thousand, three".