556694 has 4 divisors (see below), whose sum is σ = 835044. Its totient is φ = 278346.

The previous prime is 556693. The next prime is 556697. The reversal of 556694 is 496655.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556691) 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 as a sum of consecutive naturals, namely, 139172 + ... + 139175.

It is an arithmetic number, because the mean of its divisors is an integer number (208761).

2⁵⁵⁶⁶⁹⁴ is an apocalyptic number.

556694 is a deficient number, since it is larger than the sum of its proper divisors (278350).

556694 is a wasteful number, since it uses less digits than its factorization.

556694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278349.

The product of its digits is 32400, while the sum is 35.

The square root of 556694 is about 746.1192934109. The cubic root of 556694 is about 82.2631837405.

The spelling of 556694 in words is "five hundred fifty-six thousand, six hundred ninety-four".