78623841 has 8 divisors (see below), whose sum is σ = 104881984. Its totient is φ = 52390800.

The previous prime is 78623833. The next prime is 78623849. The reversal of 78623841 is 14832687.

It is an interprime number because it is at equal distance from previous prime (78623833) and next prime (78623849).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78623841 - 2³ = 78623833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78623841.

It is not an unprimeable number, because it can be changed into a prime (78623849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2991 + ... + 12891.

It is an arithmetic number, because the mean of its divisors is an integer number (13110248).

Almost surely, 2^78623841 is an apocalyptic number.

It is an amenable number.

78623841 is a deficient number, since it is larger than the sum of its proper divisors (26258143).

78623841 is a wasteful number, since it uses less digits than its factorization.

78623841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12551.

The product of its digits is 64512, while the sum is 39.

The square root of 78623841 is about 8867.0085711022. The cubic root of 78623841 is about 428.4019301316.

The spelling of 78623841 in words is "seventy-eight million, six hundred twenty-three thousand, eight hundred forty-one".