78936001 has 2 divisors, whose sum is σ = 78936002. Its totient is φ = 78936000.

The previous prime is 78935993. The next prime is 78936019. The reversal of 78936001 is 10063987.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68046001 + 10890000 = 8249^2 + 3300^2 .

It is an emirp because it is prime and its reverse (10063987) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78936001 - 2³ = 78935993 is a prime.

It is not a weakly prime, because it can be changed into another prime (78936061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39468000 + 39468001.

It is an arithmetic number, because the mean of its divisors is an integer number (39468001).

Almost surely, 2^78936001 is an apocalyptic number.

It is an amenable number.

78936001 is a deficient number, since it is larger than the sum of its proper divisors (1).

78936001 is an equidigital number, since it uses as much as digits as its factorization.

78936001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 78936001 is about 8884.5934628434. The cubic root of 78936001 is about 428.9681424136.

Adding to 78936001 its reverse (10063987), we get a palindrome (88999988).

The spelling of 78936001 in words is "seventy-eight million, nine hundred thirty-six thousand, one".