649553 has 8 divisors (see below), whose sum is σ = 724320. Its totient is φ = 578880.

The previous prime is 649541. The next prime is 649559. The reversal of 649553 is 355946.

It is a happy number.

649553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-649553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 683 + ... + 1328.

It is an arithmetic number, because the mean of its divisors is an integer number (90540).

2⁶⁴⁹⁵⁵³ is an apocalyptic number.

It is an amenable number.

649553 is a deficient number, since it is larger than the sum of its proper divisors (74767).

649553 is a wasteful number, since it uses less digits than its factorization.

649553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047.

The product of its digits is 16200, while the sum is 32.

The square root of 649553 is about 805.9485095215. The cubic root of 649553 is about 86.6040491149.

The spelling of 649553 in words is "six hundred forty-nine thousand, five hundred fifty-three".