649498 has 16 divisors (see below), whose sum is σ = 1023264. Its totient is φ = 308880.

The previous prime is 649487. The next prime is 649499. The reversal of 649498 is 894946.

649498 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 649498.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649499) 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, 4893 + ... + 5023.

It is an arithmetic number, because the mean of its divisors is an integer number (63954).

2⁶⁴⁹⁴⁹⁸ is an apocalyptic number.

649498 is a deficient number, since it is larger than the sum of its proper divisors (373766).

649498 is a wasteful number, since it uses less digits than its factorization.

649498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237.

The product of its digits is 62208, while the sum is 40.

The square root of 649498 is about 805.9143875127. The cubic root of 649498 is about 86.6016046866.

The spelling of 649498 in words is "six hundred forty-nine thousand, four hundred ninety-eight".