678469 has 8 divisors (see below), whose sum is σ = 760608. Its totient is φ = 599760.

The previous prime is 678463. The next prime is 678479. The reversal of 678469 is 964876.

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 678469 - 2⁵ = 678437 is a prime.

It is a super-2 number, since 2×678469² = 920640367922, which contains 22 as substring.

It is a Duffinian number.

678469 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678463) 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, 427 + ... + 1240.

It is an arithmetic number, because the mean of its divisors is an integer number (95076).

2⁶⁷⁸⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

678469 is a deficient number, since it is larger than the sum of its proper divisors (82139).

678469 is a wasteful number, since it uses less digits than its factorization.

678469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715.

The product of its digits is 72576, while the sum is 40.

The square root of 678469 is about 823.6922969168. The cubic root of 678469 is about 87.8705483008.

The spelling of 678469 in words is "six hundred seventy-eight thousand, four hundred sixty-nine".