78937 has 4 divisors (see below), whose sum is σ = 79540. Its totient is φ = 78336.

The previous prime is 78929. The next prime is 78941. The reversal of 78937 is 73987.

78937 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 73987 = 241 ⋅307.

It can be written as a sum of positive squares in 2 ways, for example, as 47961 + 30976 = 219^2 + 176^2 .

It is a cyclic number.

It is not a de Polignac number, because 78937 - 2³ = 78929 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78977) 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, 12 + ... + 397.

It is an arithmetic number, because the mean of its divisors is an integer number (19885).

2⁷⁸⁹³⁷ is an apocalyptic number.

It is an amenable number.

78937 is a deficient number, since it is larger than the sum of its proper divisors (603).

78937 is a wasteful number, since it uses less digits than its factorization.

78937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602.

The product of its digits is 10584, while the sum is 34.

The square root of 78937 is about 280.9572921282. The cubic root of 78937 is about 42.8969952054.

Subtracting from 78937 its reverse (73987), we obtain a triangular number (4950 = T₉₉).

The spelling of 78937 in words is "seventy-eight thousand, nine hundred thirty-seven".