3505011660 has 72 divisors (see below), whose sum is σ = 10678829616. Its totient is φ = 930541440.

The previous prime is 3505011619. The next prime is 3505011661. The reversal of 3505011660 is 661105053.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3505011661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2031 + ... + 83750.

It is an arithmetic number, because the mean of its divisors is an integer number (148317078).

Almost surely, 2^3505011660 is an apocalyptic number.

3505011660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3505011660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5339414808).

3505011660 is an abundant number, since it is smaller than the sum of its proper divisors (7173817956).

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

3505011660 is a wasteful number, since it uses less digits than its factorization.

3505011660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86023 (or 86018 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 3505011660 is about 59203.1389370530. The cubic root of 3505011660 is about 1519.0188237248.

The spelling of 3505011660 in words is "three billion, five hundred five million, eleven thousand, six hundred sixty".