78804791 has 8 divisors (see below), whose sum is σ = 85942080. Its totient is φ = 71821152.

The previous prime is 78804763. The next prime is 78804823. The reversal of 78804791 is 19740887.

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

It is not a de Polignac number, because 78804791 - 2⁶ = 78804727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78804721) 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, 37340 + ... + 39393.

It is an arithmetic number, because the mean of its divisors is an integer number (10742760).

Almost surely, 2^78804791 is an apocalyptic number.

78804791 is a deficient number, since it is larger than the sum of its proper divisors (7137289).

78804791 is a wasteful number, since it uses less digits than its factorization.

78804791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76825.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 78804791 is about 8877.2062609810. The cubic root of 78804791 is about 428.7303289771.

The spelling of 78804791 in words is "seventy-eight million, eight hundred four thousand, seven hundred ninety-one".