678573 has 12 divisors (see below), whose sum is σ = 1120288. Its totient is φ = 387720.

The previous prime is 678563. The next prime is 678577. The reversal of 678573 is 375876.

It is not a de Polignac number, because 678573 - 2⁵ = 678541 is a prime.

It is a super-2 number, since 2×678573² = 920922632658, 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 (678577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5323 + ... + 5448.

2⁶⁷⁸⁵⁷³ is an apocalyptic number.

678573 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

678573 is a deficient number, since it is larger than the sum of its proper divisors (441715).

678573 is a wasteful number, since it uses less digits than its factorization.

678573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10784 (or 10781 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 678573 is about 823.7554248683. The cubic root of 678573 is about 87.8750378551.

The spelling of 678573 in words is "six hundred seventy-eight thousand, five hundred seventy-three".