649732 has 12 divisors (see below), whose sum is σ = 1146880. Its totient is φ = 322056.

The previous prime is 649717. The next prime is 649739. The reversal of 649732 is 237946.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 649694 and 649703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649739) by changing a digit.

649732 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132 + ... + 1147.

2⁶⁴⁹⁷³² is an apocalyptic number.

It is an amenable number.

649732 is a deficient number, since it is larger than the sum of its proper divisors (497148).

649732 is a wasteful number, since it uses less digits than its factorization.

649732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410 (or 1408 counting only the distinct ones).

The product of its digits is 9072, while the sum is 31.

The square root of 649732 is about 806.0595511499. The cubic root of 649732 is about 86.6120036626.

The spelling of 649732 in words is "six hundred forty-nine thousand, seven hundred thirty-two".