649122 has 8 divisors (see below), whose sum is σ = 1298256. Its totient is φ = 216372.

The previous prime is 649093. The next prime is 649123. The reversal of 649122 is 221946.

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

649122 is an admirable number.

It is a d-powerful number, because it can be written as 6³ + 4⁸ + 1 + 9⁵ + 2⁵ + 2¹⁹ .

It is a junction number, because it is equal to n+sod(n) for n = 649092 and 649101.

It is not an unprimeable number, because it can be changed into a prime (649123) by changing a digit.

649122 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54088 + ... + 54099.

It is an arithmetic number, because the mean of its divisors is an integer number (162282).

2⁶⁴⁹¹²² is an apocalyptic number.

649122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649122 is a wasteful number, since it uses less digits than its factorization.

649122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108192.

The product of its digits is 864, while the sum is 24.

The square root of 649122 is about 805.6810783430. The cubic root of 649122 is about 86.5848899886.

The spelling of 649122 in words is "six hundred forty-nine thousand, one hundred twenty-two".