78069 has 8 divisors (see below), whose sum is σ = 106272. Its totient is φ = 50960.

The previous prime is 78059. The next prime is 78079. The reversal of 78069 is 96087.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78059) and next prime (78079).

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 78069 - 2⁸ = 77813 is a prime.

It is a super-2 number, since 2×78069² = 12189537522, which contains 22 as substring.

It is a Curzon number.

78069 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78049) 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, 87 + ... + 404.

It is an arithmetic number, because the mean of its divisors is an integer number (13284).

2⁷⁸⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

78069 is a deficient number, since it is larger than the sum of its proper divisors (28203).

78069 is a wasteful number, since it uses less digits than its factorization.

78069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 78069 is about 279.4083033841. The cubic root of 78069 is about 42.7391819691.

The spelling of 78069 in words is "seventy-eight thousand, sixty-nine".