78601 has 4 divisors (see below), whose sum is σ = 79632. Its totient is φ = 77572.

The previous prime is 78593. The next prime is 78607. The reversal of 78601 is 10687.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78601 - 2³ = 78593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391 + ... + 556.

It is an arithmetic number, because the mean of its divisors is an integer number (19908).

2⁷⁸⁶⁰¹ is an apocalyptic number.

It is an amenable number.

78601 is a deficient number, since it is larger than the sum of its proper divisors (1031).

78601 is an equidigital number, since it uses as much as digits as its factorization.

78601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 78601 is about 280.3586988128. The cubic root of 78601 is about 42.8360441121.

The spelling of 78601 in words is "seventy-eight thousand, six hundred one".