78834965 has 8 divisors (see below), whose sum is σ = 103202208. Its totient is φ = 57334480.

The previous prime is 78834949. The next prime is 78834991. The reversal of 78834965 is 56943887.

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

It is not a de Polignac number, because 78834965 - 2⁴ = 78834949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716627 + ... + 716736.

It is an arithmetic number, because the mean of its divisors is an integer number (12900276).

Almost surely, 2^78834965 is an apocalyptic number.

It is an amenable number.

78834965 is a deficient number, since it is larger than the sum of its proper divisors (24367243).

78834965 is a wasteful number, since it uses less digits than its factorization.

78834965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433379.

The product of its digits is 1451520, while the sum is 50.

The square root of 78834965 is about 8878.9056195006. The cubic root of 78834965 is about 428.7850416327.

It can be divided in two parts, 788 and 34965, that added together give a palindrome (35753).

The spelling of 78834965 in words is "seventy-eight million, eight hundred thirty-four thousand, nine hundred sixty-five".