556654 has 8 divisors (see below), whose sum is σ = 954288. Its totient is φ = 238560.

The previous prime is 556651. The next prime is 556679. The reversal of 556654 is 456655.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556651) 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, 19867 + ... + 19894.

It is an arithmetic number, because the mean of its divisors is an integer number (119286).

2⁵⁵⁶⁶⁵⁴ is an apocalyptic number.

556654 is a deficient number, since it is larger than the sum of its proper divisors (397634).

556654 is a wasteful number, since it uses less digits than its factorization.

556654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39770.

The product of its digits is 18000, while the sum is 31.

The square root of 556654 is about 746.0924875644. The cubic root of 556654 is about 82.2612134144.

Subtracting from 556654 its reverse (456655), we obtain a palindrome (99999).

The spelling of 556654 in words is "five hundred fifty-six thousand, six hundred fifty-four".