678065269 has 8 divisors (see below), whose sum is σ = 801653760. Its totient is φ = 561157296.

The previous prime is 678065249. The next prime is 678065273. The reversal of 678065269 is 962560876.

It is a happy number.

678065269 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 678065269 - 2¹⁷ = 677934197 is a prime.

It is a super-2 number, since 2×678065269² = 919545018048084722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678065209) 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, 1669909 + ... + 1670314.

It is an arithmetic number, because the mean of its divisors is an integer number (100206720).

Almost surely, 2^678065269 is an apocalyptic number.

It is an amenable number.

678065269 is a deficient number, since it is larger than the sum of its proper divisors (123588491).

678065269 is a wasteful number, since it uses less digits than its factorization.

678065269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340259.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 678065269 is about 26039.6864228431. The cubic root of 678065269 is about 878.5311537295.

The spelling of 678065269 in words is "six hundred seventy-eight million, sixty-five thousand, two hundred sixty-nine".