180746660 has 24 divisors (see below), whose sum is σ = 385793016. Its totient is φ = 71112960.

The previous prime is 180746653. The next prime is 180746663. The reversal of 180746660 is 66647081.

It can be written as a sum of positive squares in 4 ways, for example, as 972196 + 179774464 = 986^2 + 13408^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (180746663) 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, 72857 + ... + 75296.

It is an arithmetic number, because the mean of its divisors is an integer number (16074709).

Almost surely, 2^180746660 is an apocalyptic number.

180746660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180746660 is an abundant number, since it is smaller than the sum of its proper divisors (205046356).

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

180746660 is a wasteful number, since it uses less digits than its factorization.

180746660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148223 (or 148221 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 180746660 is about 13444.2054432384. The cubic root of 180746660 is about 565.4012447280.

The spelling of 180746660 in words is "one hundred eighty million, seven hundred forty-six thousand, six hundred sixty".