1655567556 has 12 divisors (see below), whose sum is σ = 3862990992. Its totient is φ = 551855848.

The previous prime is 1655567549. The next prime is 1655567567. The reversal of 1655567556 is 6557655561.

1655567556 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1655567499 and 1655567508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68981970 + ... + 68981993.

It is an arithmetic number, because the mean of its divisors is an integer number (321915916).

Almost surely, 2^1655567556 is an apocalyptic number.

It is an amenable number.

1655567556 is an abundant number, since it is smaller than the sum of its proper divisors (2207423436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1655567556 is a wasteful number, since it uses less digits than its factorization.

1655567556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137963970 (or 137963968 counting only the distinct ones).

The product of its digits is 4725000, while the sum is 51.

The square root of 1655567556 is about 40688.6661860524. Note that the first 3 decimals coincide. The cubic root of 1655567556 is about 1182.9933472963.

The spelling of 1655567556 in words is "one billion, six hundred fifty-five million, five hundred sixty-seven thousand, five hundred fifty-six".