556996749 has 8 divisors (see below), whose sum is σ = 742784160. Its totient is φ = 371270256.

The previous prime is 556996711. The next prime is 556996763. The reversal of 556996749 is 947699655.

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

It is a de Polignac number, because none of the positive numbers 2^k-556996749 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 556996692 and 556996701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556996709) 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, 14274 + ... + 36300.

It is an arithmetic number, because the mean of its divisors is an integer number (92848020).

Almost surely, 2^556996749 is an apocalyptic number.

It is an amenable number.

556996749 is a deficient number, since it is larger than the sum of its proper divisors (185787411).

556996749 is a wasteful number, since it uses less digits than its factorization.

556996749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30459.

The product of its digits is 18370800, while the sum is 60.

The square root of 556996749 is about 23600.7785676659. The cubic root of 556996749 is about 822.7809353726.

The spelling of 556996749 in words is "five hundred fifty-six million, nine hundred ninety-six thousand, seven hundred forty-nine".