180664650 has 36 divisors (see below), whose sum is σ = 485386902. Its totient is φ = 48177120.

The previous prime is 180664643. The next prime is 180664657. The reversal of 180664650 is 56466081.

180664650 is a `hidden beast` number, since 1 + 8 + 0 + 6 + 646 + 5 + 0 = 666.

180664650 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (180664643) and next prime (180664657).

It can be written as a sum of positive squares in 3 ways, for example, as 134165889 + 46498761 = 11583^2 + 6819^2 .

It is not an unprimeable number, because it can be changed into a prime (180664657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 200289 + ... + 201188.

Almost surely, 2^180664650 is an apocalyptic number.

180664650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

180664650 is an abundant number, since it is smaller than the sum of its proper divisors (304722252).

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

180664650 is a wasteful number, since it uses less digits than its factorization.

180664650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401495 (or 401487 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 180664650 is about 13441.1550842924. The cubic root of 180664650 is about 565.3157188124.

The spelling of 180664650 in words is "one hundred eighty million, six hundred sixty-four thousand, six hundred fifty".