649426 has 8 divisors (see below), whose sum is σ = 1007820. Its totient is φ = 313488.

The previous prime is 649423. The next prime is 649427. The reversal of 649426 is 624946.

649426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 638401 + 11025 = 799^2 + 105^2 .

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

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (649421) 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, 5541 + ... + 5656.

2⁶⁴⁹⁴²⁶ is an apocalyptic number.

649426 is a deficient number, since it is larger than the sum of its proper divisors (358394).

649426 is a wasteful number, since it uses less digits than its factorization.

649426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11228.

The product of its digits is 10368, while the sum is 31.

The square root of 649426 is about 805.8697165175. The cubic root of 649426 is about 86.5984044992.

The spelling of 649426 in words is "six hundred forty-nine thousand, four hundred twenty-six".