78430685 has 8 divisors (see below), whose sum is σ = 94246656. Its totient is φ = 62658000.

The previous prime is 78430657. The next prime is 78430687. The reversal of 78430685 is 58603487.

It is a happy number.

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

It is not a de Polignac number, because 78430685 - 2¹⁰ = 78429661 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 (78430687) 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, 6689 + ... + 14198.

It is an arithmetic number, because the mean of its divisors is an integer number (11780832).

Almost surely, 2^78430685 is an apocalyptic number.

It is an amenable number.

78430685 is a deficient number, since it is larger than the sum of its proper divisors (15815971).

78430685 is a wasteful number, since it uses less digits than its factorization.

78430685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21643.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 78430685 is about 8856.1100377084. The cubic root of 78430685 is about 428.0508226398.

The spelling of 78430685 in words is "seventy-eight million, four hundred thirty thousand, six hundred eighty-five".