556690089 has 4 divisors (see below), whose sum is σ = 742253456. Its totient is φ = 371126724.

The previous prime is 556690067. The next prime is 556690103. The reversal of 556690089 is 980096655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 556690089 - 2⁷ = 556689961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556690009) 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, 92781679 + ... + 92781684.

It is an arithmetic number, because the mean of its divisors is an integer number (185563364).

Almost surely, 2^556690089 is an apocalyptic number.

It is an amenable number.

556690089 is a deficient number, since it is larger than the sum of its proper divisors (185563367).

556690089 is a wasteful number, since it uses less digits than its factorization.

556690089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185563366.

The product of its (nonzero) digits is 583200, while the sum is 48.

The square root of 556690089 is about 23594.2808536306. The cubic root of 556690089 is about 822.6299109600.

The spelling of 556690089 in words is "five hundred fifty-six million, six hundred ninety thousand, eighty-nine".