556680345 has 32 divisors (see below), whose sum is σ = 961414272. Its totient is φ = 273426432.

The previous prime is 556680343. The next prime is 556680347. The reversal of 556680345 is 543086655.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (556680343) and next prime (556680347).

It is not a de Polignac number, because 556680345 - 2¹ = 556680343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 556680297 and 556680306.

It is not an unprimeable number, because it can be changed into a prime (556680343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88009 + ... + 94121.

It is an arithmetic number, because the mean of its divisors is an integer number (30044196).

Almost surely, 2^556680345 is an apocalyptic number.

It is an amenable number.

556680345 is a deficient number, since it is larger than the sum of its proper divisors (404733927).

556680345 is a wasteful number, since it uses less digits than its factorization.

556680345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6601.

The product of its (nonzero) digits is 432000, while the sum is 42.

The square root of 556680345 is about 23594.0743620088. The cubic root of 556680345 is about 822.6251113101.

The spelling of 556680345 in words is "five hundred fifty-six million, six hundred eighty thousand, three hundred forty-five".