78689341 has 4 divisors (see below), whose sum is σ = 79042432. Its totient is φ = 78336252.

The previous prime is 78689333. The next prime is 78689357. The reversal of 78689341 is 14398687.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14398687 = 89 ⋅161783.

It is a cyclic number.

It is not a de Polignac number, because 78689341 - 2³ = 78689333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78689291 and 78689300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78689041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176211 + ... + 176656.

It is an arithmetic number, because the mean of its divisors is an integer number (19760608).

Almost surely, 2^78689341 is an apocalyptic number.

It is an amenable number.

78689341 is a deficient number, since it is larger than the sum of its proper divisors (353091).

78689341 is a wasteful number, since it uses less digits than its factorization.

78689341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353090.

The product of its digits is 290304, while the sum is 46.

The square root of 78689341 is about 8870.7012687837. The cubic root of 78689341 is about 428.5208615629.

The spelling of 78689341 in words is "seventy-eight million, six hundred eighty-nine thousand, three hundred forty-one".