655601656 has 16 divisors (see below), whose sum is σ = 1230213240. Its totient is φ = 327544800.

The previous prime is 655601647. The next prime is 655601659. The reversal of 655601656 is 656106556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655601659) 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, 20895 + ... + 41806.

Almost surely, 2^655601656 is an apocalyptic number.

It is an amenable number.

655601656 is a deficient number, since it is larger than the sum of its proper divisors (574611584).

655601656 is a wasteful number, since it uses less digits than its factorization.

655601656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64014 (or 64010 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 655601656 is about 25604.7194087340. The cubic root of 655601656 is about 868.7203877490.

The spelling of 655601656 in words is "six hundred fifty-five million, six hundred one thousand, six hundred fifty-six".