1660774432 has 48 divisors (see below), whose sum is σ = 3416478912. Its totient is φ = 793196800.

The previous prime is 1660774403. The next prime is 1660774441. The reversal of 1660774432 is 2344770661.

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, 872682 + ... + 874582.

It is an arithmetic number, because the mean of its divisors is an integer number (71176644).

Almost surely, 2^1660774432 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 1660774432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1708239456).

1660774432 is an abundant number, since it is smaller than the sum of its proper divisors (1755704480).

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

1660774432 is a wasteful number, since it uses less digits than its factorization.

1660774432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121 (or 3113 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 1660774432 is about 40752.6003096735. The cubic root of 1660774432 is about 1184.2322483895.

The spelling of 1660774432 in words is "one billion, six hundred sixty million, seven hundred seventy-four thousand, four hundred thirty-two".