649046 has 4 divisors (see below), whose sum is σ = 973572. Its totient is φ = 324522.

The previous prime is 649039. The next prime is 649063. The reversal of 649046 is 640946.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 162260 + ... + 162263.

It is an arithmetic number, because the mean of its divisors is an integer number (243393).

2⁶⁴⁹⁰⁴⁶ is an apocalyptic number.

649046 is a deficient number, since it is larger than the sum of its proper divisors (324526).

649046 is a wasteful number, since it uses less digits than its factorization.

649046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324525.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 649046 is about 805.6339118980. The cubic root of 649046 is about 86.5815107016.

Subtracting from 649046 its reverse (640946), we obtain a square (8100 = 90²).

The spelling of 649046 in words is "six hundred forty-nine thousand, forty-six".