1599665560 has 32 divisors (see below), whose sum is σ = 3612081600. Its totient is φ = 637584640.

The previous prime is 1599665521. The next prime is 1599665569. The reversal of 1599665560 is 655669951.

It is a super-2 number, since 2×1599665560² = 5117859807700227200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1599665498 and 1599665507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1599665569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59920 + ... + 82399.

It is an arithmetic number, because the mean of its divisors is an integer number (112877550).

Almost surely, 2^1599665560 is an apocalyptic number.

1599665560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1599665560 is an abundant number, since it is smaller than the sum of its proper divisors (2012416040).

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

1599665560 is a wasteful number, since it uses less digits than its factorization.

1599665560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142611 (or 142607 counting only the distinct ones).

The product of its (nonzero) digits is 2187000, while the sum is 52.

The square root of 1599665560 is about 39995.8192815199. The cubic root of 1599665560 is about 1169.5255972321.

It can be divided in two parts, 1599665 and 560, that added together give a square (1600225 = 1265²).

The spelling of 1599665560 in words is "one billion, five hundred ninety-nine million, six hundred sixty-five thousand, five hundred sixty".