78670 has 8 divisors (see below), whose sum is σ = 141624. Its totient is φ = 31464.

The previous prime is 78653. The next prime is 78691. The reversal of 78670 is 7687.

78670 is nontrivially palindromic in base 9.

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

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3924 + ... + 3943.

It is an arithmetic number, because the mean of its divisors is an integer number (17703).

2⁷⁸⁶⁷⁰ is an apocalyptic number.

78670 is a deficient number, since it is larger than the sum of its proper divisors (62954).

78670 is a wasteful number, since it uses less digits than its factorization.

78670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7874.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 78670 is about 280.4817284602. The cubic root of 78670 is about 42.8485750068.

The spelling of 78670 in words is "seventy-eight thousand, six hundred seventy".