1660228856 has 32 divisors (see below), whose sum is σ = 3657150000. Its totient is φ = 696599040.

The previous prime is 1660228841. The next prime is 1660228861. The reversal of 1660228856 is 6588220661.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 724481 + ... + 726768.

Almost surely, 2^1660228856 is an apocalyptic number.

It is an amenable number.

1660228856 is an abundant number, since it is smaller than the sum of its proper divisors (1996921144).

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

1660228856 is a wasteful number, since it uses less digits than its factorization.

1660228856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451279 (or 1451275 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 1660228856 is about 40745.9060029348. The cubic root of 1660228856 is about 1184.1025579989.

The spelling of 1660228856 in words is "one billion, six hundred sixty million, two hundred twenty-eight thousand, eight hundred fifty-six".