78460217 has 8 divisors (see below), whose sum is σ = 85681152. Its totient is φ = 71254000.

The previous prime is 78460189. The next prime is 78460229. The reversal of 78460217 is 71206487.

It is a happy number.

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 78460217 - 2¹⁰ = 78459193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78460237) 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, 9563 + ... + 15759.

It is an arithmetic number, because the mean of its divisors is an integer number (10710144).

Almost surely, 2^78460217 is an apocalyptic number.

It is an amenable number.

78460217 is a deficient number, since it is larger than the sum of its proper divisors (7220935).

78460217 is a wasteful number, since it uses less digits than its factorization.

78460217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7359.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 78460217 is about 8857.7772042426. Note that the first 3 decimals coincide. The cubic root of 78460217 is about 428.1045414558.

The spelling of 78460217 in words is "seventy-eight million, four hundred sixty thousand, two hundred seventeen".