78834641 has 8 divisors (see below), whose sum is σ = 79843968. Its totient is φ = 77830000.

The previous prime is 78834617. The next prime is 78834647. The reversal of 78834641 is 14643887.

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

It is a cyclic number.

It is not a de Polignac number, because 78834641 - 2²² = 74640337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78834647) 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, 42626 + ... + 44436.

It is an arithmetic number, because the mean of its divisors is an integer number (9980496).

Almost surely, 2^78834641 is an apocalyptic number.

It is an amenable number.

78834641 is a deficient number, since it is larger than the sum of its proper divisors (1009327).

78834641 is a wasteful number, since it uses less digits than its factorization.

78834641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343.

The product of its digits is 129024, while the sum is 41.

The square root of 78834641 is about 8878.8873739901. The cubic root of 78834641 is about 428.7844542177.

The spelling of 78834641 in words is "seventy-eight million, eight hundred thirty-four thousand, six hundred forty-one".