150003661 has 8 divisors (see below), whose sum is σ = 154334720. Its totient is φ = 145687248.

The previous prime is 150003647. The next prime is 150003691. The reversal of 150003661 is 166300051.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 150003661 - 2¹¹ = 150001613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150003641) 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 7 ways as a sum of consecutive naturals, for example, 19120 + ... + 25798.

It is an arithmetic number, because the mean of its divisors is an integer number (19291840).

Almost surely, 2^150003661 is an apocalyptic number.

It is an amenable number.

150003661 is a deficient number, since it is larger than the sum of its proper divisors (4331059).

150003661 is an equidigital number, since it uses as much as digits as its factorization.

150003661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7323.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 150003661 is about 12247.5981727031. The cubic root of 150003661 is about 531.3336072151. Note that the first 3 decimals are identical.

The spelling of 150003661 in words is "one hundred fifty million, three thousand, six hundred sixty-one".