655631606 has 16 divisors (see below), whose sum is σ = 1172807424. Its totient is φ = 268768104.

The previous prime is 655631593. The next prime is 655631611. The reversal of 655631606 is 606136556.

It is a super-2 number, since 2×655631606² = 859705605572278472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 655631606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1017740 + ... + 1018383.

It is an arithmetic number, because the mean of its divisors is an integer number (73300464).

Almost surely, 2^655631606 is an apocalyptic number.

655631606 is a deficient number, since it is larger than the sum of its proper divisors (517175818).

655631606 is a wasteful number, since it uses less digits than its factorization.

655631606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036155.

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 655631606 is about 25605.3042551734. The cubic root of 655631606 is about 868.7336161981.

The spelling of 655631606 in words is "six hundred fifty-five million, six hundred thirty-one thousand, six hundred six".