650438 has 4 divisors (see below), whose sum is σ = 975660. Its totient is φ = 325218.

The previous prime is 650413. The next prime is 650449. The reversal of 650438 is 834056.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162608 + ... + 162611.

It is an arithmetic number, because the mean of its divisors is an integer number (243915).

2⁶⁵⁰⁴³⁸ is an apocalyptic number.

650438 is a deficient number, since it is larger than the sum of its proper divisors (325222).

650438 is a wasteful number, since it uses less digits than its factorization.

650438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325221.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 650438 is about 806.4973651538. The cubic root of 650438 is about 86.6433632284.

The spelling of 650438 in words is "six hundred fifty thousand, four hundred thirty-eight".