649124 has 24 divisors (see below), whose sum is σ = 1317120. Its totient is φ = 274176.

The previous prime is 649123. The next prime is 649141. The reversal of 649124 is 421946.

It is a junction number, because it is equal to n+sod(n) for n = 649093 and 649102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649123) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 2597 + ... + 2835.

It is an arithmetic number, because the mean of its divisors is an integer number (54880).

2⁶⁴⁹¹²⁴ is an apocalyptic number.

It is an amenable number.

649124 is an abundant number, since it is smaller than the sum of its proper divisors (667996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649124 is a wasteful number, since it uses less digits than its factorization.

649124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 345 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 649124 is about 805.6823195280. The cubic root of 649124 is about 86.5849789136.

The spelling of 649124 in words is "six hundred forty-nine thousand, one hundred twenty-four".