1656660328 has 8 divisors (see below), whose sum is σ = 3106238130. Its totient is φ = 828330160.

The previous prime is 1656660281. The next prime is 1656660337. The reversal of 1656660328 is 8230666561.

It can be written as a sum of positive squares in only one way, i.e., 926471844 + 730188484 = 30438^2 + 27022^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103541263 + ... + 103541278.

Almost surely, 2^1656660328 is an apocalyptic number.

It is an amenable number.

1656660328 is a deficient number, since it is larger than the sum of its proper divisors (1449577802).

1656660328 is a wasteful number, since it uses less digits than its factorization.

1656660328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207082547 (or 207082543 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 1656660328 is about 40702.0924277856. The cubic root of 1656660328 is about 1183.2535717889.

The spelling of 1656660328 in words is "one billion, six hundred fifty-six million, six hundred sixty thousand, three hundred twenty-eight".