650149 has 4 divisors (see below), whose sum is σ = 652320. Its totient is φ = 647980.

The previous prime is 650107. The next prime is 650179. The reversal of 650149 is 941056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 650149 - 2¹¹ = 648101 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547 + ... + 1264.

It is an arithmetic number, because the mean of its divisors is an integer number (163080).

2⁶⁵⁰¹⁴⁹ is an apocalyptic number.

It is an amenable number.

650149 is a deficient number, since it is larger than the sum of its proper divisors (2171).

650149 is a wasteful number, since it uses less digits than its factorization.

650149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2170.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 650149 is about 806.3181754122. The cubic root of 650149 is about 86.6305289836.

The spelling of 650149 in words is "six hundred fifty thousand, one hundred forty-nine".