1660601256 has 64 divisors (see below), whose sum is σ = 4244011200. Its totient is φ = 541298688.

The previous prime is 1660601237. The next prime is 1660601269. The reversal of 1660601256 is 6521060661.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275976 + ... + 281928.

It is an arithmetic number, because the mean of its divisors is an integer number (66312675).

Almost surely, 2^1660601256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1660601256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2122005600).

1660601256 is an abundant number, since it is smaller than the sum of its proper divisors (2583409944).

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

1660601256 is a wasteful number, since it uses less digits than its factorization.

1660601256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6218 (or 6214 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 1660601256 is about 40750.4755309677. The cubic root of 1660601256 is about 1184.1910853175.

The spelling of 1660601256 in words is "one billion, six hundred sixty million, six hundred one thousand, two hundred fifty-six".