1660112505 has 24 divisors (see below), whose sum is σ = 2895868872. Its totient is φ = 879750144.

The previous prime is 1660112477. The next prime is 1660112537. The reversal of 1660112505 is 5052110661.

It is a happy number.

1660112505 is a `hidden beast` number, since 1 + 6 + 601 + 1 + 2 + 50 + 5 = 666.

1660112505 is digitally balanced in base 6, 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 31505769 + 1628606736 = 5613^2 + 40356^2 .

It is not a de Polignac number, because 1660112505 - 2⁹ = 1660111993 is a prime.

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, 110424 + ... + 124553.

It is an arithmetic number, because the mean of its divisors is an integer number (120661203).

Almost surely, 2^1660112505 is an apocalyptic number.

1660112505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1660112505 is a deficient number, since it is larger than the sum of its proper divisors (1235756367).

1660112505 is a wasteful number, since it uses less digits than its factorization.

1660112505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235145 (or 235142 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 1660112505 is about 40744.4782148453. The cubic root of 1660112505 is about 1184.0748962030.

The spelling of 1660112505 in words is "one billion, six hundred sixty million, one hundred twelve thousand, five hundred five".