78506341 has 4 divisors (see below), whose sum is σ = 80628172. Its totient is φ = 76384512.

The previous prime is 78506339. The next prime is 78506359. The reversal of 78506341 is 14360587.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14360587 = 719 ⋅19973.

It can be written as a sum of positive squares in 2 ways, for example, as 48024900 + 30481441 = 6930^2 + 5521^2 .

It is a cyclic number.

It is not a de Polignac number, because 78506341 - 2¹ = 78506339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78506297 and 78506306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78506371) 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, 1060860 + ... + 1060933.

It is an arithmetic number, because the mean of its divisors is an integer number (20157043).

Almost surely, 2^78506341 is an apocalyptic number.

It is an amenable number.

78506341 is a deficient number, since it is larger than the sum of its proper divisors (2121831).

78506341 is a wasteful number, since it uses less digits than its factorization.

78506341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121830.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 78506341 is about 8860.3804094407. The cubic root of 78506341 is about 428.1884142200.

The spelling of 78506341 in words is "seventy-eight million, five hundred six thousand, three hundred forty-one".