557678 has 8 divisors (see below), whose sum is σ = 912600. Its totient is φ = 253480.

The previous prime is 557671. The next prime is 557693. The reversal of 557678 is 876755.

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

It is a super-2 number, since 2×557678² = 622009503368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557671) by changing a digit.

557678 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12653 + ... + 12696.

It is an arithmetic number, because the mean of its divisors is an integer number (114075).

2⁵⁵⁷⁶⁷⁸ is an apocalyptic number.

557678 is a deficient number, since it is larger than the sum of its proper divisors (354922).

557678 is a wasteful number, since it uses less digits than its factorization.

557678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25362.

The product of its digits is 58800, while the sum is 38.

The square root of 557678 is about 746.7784142569. The cubic root of 557678 is about 82.3116240723.

The spelling of 557678 in words is "five hundred fifty-seven thousand, six hundred seventy-eight".