676581 has 4 divisors (see below), whose sum is σ = 902112. Its totient is φ = 451052.

The previous prime is 676573. The next prime is 676589. The reversal of 676581 is 185676.

676581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (676573) and next prime (676589).

It is a cyclic number.

It is not a de Polignac number, because 676581 - 2³ = 676573 is a prime.

It is a super-2 number, since 2×676581² = 915523699122, which contains 22 as substring.

It is a D-number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112761 + ... + 112766.

It is an arithmetic number, because the mean of its divisors is an integer number (225528).

2⁶⁷⁶⁵⁸¹ is an apocalyptic number.

It is an amenable number.

676581 is a deficient number, since it is larger than the sum of its proper divisors (225531).

676581 is a wasteful number, since it uses less digits than its factorization.

676581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225530.

The product of its digits is 10080, while the sum is 33.

The square root of 676581 is about 822.5454394743. The cubic root of 676581 is about 87.7889657385.

The spelling of 676581 in words is "six hundred seventy-six thousand, five hundred eighty-one".