649232 has 10 divisors (see below), whose sum is σ = 1257918. Its totient is φ = 324608.

The previous prime is 649217. The next prime is 649261. The reversal of 649232 is 232946.

It can be written as a sum of positive squares in only one way, i.e., 583696 + 65536 = 764^2 + 256^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 649232.

It is an unprimeable number.

649232 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20273 + ... + 20304.

2⁶⁴⁹²³² is an apocalyptic number.

It is an amenable number.

649232 is a deficient number, since it is larger than the sum of its proper divisors (608686).

649232 is a wasteful number, since it uses less digits than its factorization.

649232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40585 (or 40579 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 649232 is about 805.7493406761. The cubic root of 649232 is about 86.5897805946.

The spelling of 649232 in words is "six hundred forty-nine thousand, two hundred thirty-two".