78604287 has 8 divisors (see below), whose sum is σ = 104891136. Its totient is φ = 52360152.

The previous prime is 78604261. The next prime is 78604291. The reversal of 78604287 is 78240687.

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

It is not a de Polignac number, because 78604287 - 2¹⁴ = 78587903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78604217) 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, 6103 + ... + 13944.

It is an arithmetic number, because the mean of its divisors is an integer number (13111392).

Almost surely, 2^78604287 is an apocalyptic number.

78604287 is a deficient number, since it is larger than the sum of its proper divisors (26286849).

78604287 is a wasteful number, since it uses less digits than its factorization.

78604287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21357.

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 78604287 is about 8865.9058758821. The cubic root of 78604287 is about 428.3664122115.

The spelling of 78604287 in words is "seventy-eight million, six hundred four thousand, two hundred eighty-seven".