1606560660 has 72 divisors (see below), whose sum is σ = 4953156936. Its totient is φ = 421390080.

The previous prime is 1606560653. The next prime is 1606560671. The reversal of 1606560660 is 660656061.

1606560660 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 162256644 + 1444304016 = 12738^2 + 38004^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62179 + ... + 84138.

Almost surely, 2^1606560660 is an apocalyptic number.

1606560660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1606560660 is an abundant number, since it is smaller than the sum of its proper divisors (3346596276).

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

1606560660 is a wasteful number, since it uses less digits than its factorization.

1606560660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146393 (or 146388 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 1606560660 is about 40081.9243550007. The cubic root of 1606560660 is about 1171.2035390945.

The spelling of 1606560660 in words is "one billion, six hundred six million, five hundred sixty thousand, six hundred sixty".