649654 has 8 divisors (see below), whose sum is σ = 982008. Its totient is φ = 322320.

The previous prime is 649651. The next prime is 649657. The reversal of 649654 is 456946.

It is an interprime number because it is at equal distance from previous prime (649651) and next prime (649657).

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

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 912 + ... + 1459.

It is an arithmetic number, because the mean of its divisors is an integer number (122751).

2⁶⁴⁹⁶⁵⁴ is an apocalyptic number.

649654 is a deficient number, since it is larger than the sum of its proper divisors (332354).

649654 is a wasteful number, since it uses less digits than its factorization.

649654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510.

The product of its digits is 25920, while the sum is 34.

The square root of 649654 is about 806.0111661758. The cubic root of 649654 is about 86.6085376148.

The spelling of 649654 in words is "six hundred forty-nine thousand, six hundred fifty-four".