1660763706 has 128 divisors (see below), whose sum is σ = 4079738880. Its totient is φ = 440681472.

The previous prime is 1660763701. The next prime is 1660763719. The reversal of 1660763706 is 6073670661.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1660763701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3835266 + ... + 3835698.

It is an arithmetic number, because the mean of its divisors is an integer number (31872960).

Almost surely, 2^1660763706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1660763706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2039869440).

1660763706 is an abundant number, since it is smaller than the sum of its proper divisors (2418975174).

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

1660763706 is a wasteful number, since it uses less digits than its factorization.

1660763706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588.

The product of its (nonzero) digits is 190512, while the sum is 42.

The square root of 1660763706 is about 40752.4687104965. The cubic root of 1660763706 is about 1184.2296989559.

The spelling of 1660763706 in words is "one billion, six hundred sixty million, seven hundred sixty-three thousand, seven hundred six".