78607201 has 4 divisors (see below), whose sum is σ = 83231172. Its totient is φ = 73983232.

The previous prime is 78607187. The next prime is 78607219. The reversal of 78607201 is 10270687.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10270687 = 7 ⋅1467241.

It can be written as a sum of positive squares in 2 ways, for example, as 21150801 + 57456400 = 4599^2 + 7580^2 .

It is a cyclic number.

It is not a de Polignac number, because 78607201 - 2¹⁷ = 78476129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78607241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2311960 + ... + 2311993.

It is an arithmetic number, because the mean of its divisors is an integer number (20807793).

Almost surely, 2^78607201 is an apocalyptic number.

It is an amenable number.

78607201 is a deficient number, since it is larger than the sum of its proper divisors (4623971).

78607201 is a wasteful number, since it uses less digits than its factorization.

78607201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4623970.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 78607201 is about 8866.0702117680. The cubic root of 78607201 is about 428.3717055797.

Adding to 78607201 its reverse (10270687), we get a palindrome (88877888).

The spelling of 78607201 in words is "seventy-eight million, six hundred seven thousand, two hundred one".