149930665 has 4 divisors (see below), whose sum is σ = 179916804. Its totient is φ = 119944528.

The previous prime is 149930659. The next prime is 149930681. The reversal of 149930665 is 566039941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 566039941 = 47 ⋅12043403.

It can be written as a sum of positive squares in 2 ways, for example, as 52533504 + 97397161 = 7248^2 + 9869^2 .

It is a cyclic number.

It is not a de Polignac number, because 149930665 - 2¹⁹ = 149406377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14993062 + ... + 14993071.

It is an arithmetic number, because the mean of its divisors is an integer number (44979201).

Almost surely, 2^149930665 is an apocalyptic number.

It is an amenable number.

149930665 is a deficient number, since it is larger than the sum of its proper divisors (29986139).

149930665 is an equidigital number, since it uses as much as digits as its factorization.

149930665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29986138.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 149930665 is about 12244.6177972201. The cubic root of 149930665 is about 531.2474059389.

The spelling of 149930665 in words is "one hundred forty-nine million, nine hundred thirty thousand, six hundred sixty-five".