556723361 has 8 divisors (see below), whose sum is σ = 592529544. Its totient is φ = 521256960.

The previous prime is 556723357. The next prime is 556723373. The reversal of 556723361 is 163327655.

It can be written as a sum of positive squares in 4 ways, for example, as 85008400 + 471714961 = 9220^2 + 21719^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 556723361 - 2² = 556723357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556720361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81560 + ... + 88121.

It is an arithmetic number, because the mean of its divisors is an integer number (74066193).

Almost surely, 2^556723361 is an apocalyptic number.

It is an amenable number.

556723361 is a deficient number, since it is larger than the sum of its proper divisors (35806183).

556723361 is a wasteful number, since it uses less digits than its factorization.

556723361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169891.

The product of its digits is 113400, while the sum is 38.

The square root of 556723361 is about 23594.9859292181. The cubic root of 556723361 is about 822.6462994903.

The spelling of 556723361 in words is "five hundred fifty-six million, seven hundred twenty-three thousand, three hundred sixty-one".