606661556 has 24 divisors (see below), whose sum is σ = 1099388640. Its totient is φ = 292572000.

The previous prime is 606661553. The next prime is 606661567. The reversal of 606661556 is 655166606.

It is a super-2 number, since 2×606661556² = 736076487056682272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (606661553) 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, 147731 + ... + 151781.

It is an arithmetic number, because the mean of its divisors is an integer number (45807860).

Almost surely, 2^606661556 is an apocalyptic number.

It is an amenable number.

606661556 is a deficient number, since it is larger than the sum of its proper divisors (492727084).

606661556 is a wasteful number, since it uses less digits than its factorization.

606661556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5375 (or 5373 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 606661556 is about 24630.5005227259. The cubic root of 606661556 is about 846.5426140056.

The spelling of 606661556 in words is "six hundred six million, six hundred sixty-one thousand, five hundred fifty-six".