1660323040 has 24 divisors (see below), whose sum is σ = 3922513560. Its totient is φ = 664129152.

The previous prime is 1660323029. The next prime is 1660323059. The reversal of 1660323040 is 403230661.

It is a junction number, because it is equal to n+sod(n) for n = 1660322996 and 1660323014.

It is a congruent number.

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, 5188350 + ... + 5188669.

It is an arithmetic number, because the mean of its divisors is an integer number (163438065).

Almost surely, 2^1660323040 is an apocalyptic number.

1660323040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1660323040 is an abundant number, since it is smaller than the sum of its proper divisors (2262190520).

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

1660323040 is a wasteful number, since it uses less digits than its factorization.

1660323040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10377034 (or 10377026 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 1660323040 is about 40747.0617345595. The cubic root of 1660323040 is about 1184.1249487688.

The spelling of 1660323040 in words is "one billion, six hundred sixty million, three hundred twenty-three thousand, forty".