78560001 has 24 divisors (see below), whose sum is σ = 122793216. Its totient is φ = 48111840.

The previous prime is 78559997. The next prime is 78560021. The reversal of 78560001 is 10006587.

It is not a de Polignac number, because 78560001 - 2² = 78559997 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78560021) 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 23 ways as a sum of consecutive naturals, for example, 24586 + ... + 27596.

It is an arithmetic number, because the mean of its divisors is an integer number (5116384).

Almost surely, 2^78560001 is an apocalyptic number.

It is an amenable number.

78560001 is a deficient number, since it is larger than the sum of its proper divisors (44233215).

78560001 is a wasteful number, since it uses less digits than its factorization.

78560001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3253 (or 3250 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 78560001 is about 8863.4079788758. The cubic root of 78560001 is about 428.2859492602.

Adding to 78560001 its reverse (10006587), we get a palindrome (88566588).

The spelling of 78560001 in words is "seventy-eight million, five hundred sixty thousand, one".