649419 has 8 divisors (see below), whose sum is σ = 893952. Its totient is φ = 418920.

The previous prime is 649403. The next prime is 649421. The reversal of 649419 is 914946.

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

It is not a de Polignac number, because 649419 - 2⁴ = 649403 is a prime.

It is a super-2 number, since 2×649419² = 843490075122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 649419.

It is not an unprimeable number, because it can be changed into a prime (649469) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3399 + ... + 3584.

It is an arithmetic number, because the mean of its divisors is an integer number (111744).

2⁶⁴⁹⁴¹⁹ is an apocalyptic number.

649419 is a deficient number, since it is larger than the sum of its proper divisors (244533).

649419 is a wasteful number, since it uses less digits than its factorization.

649419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7017.

The product of its digits is 7776, while the sum is 33.

The square root of 649419 is about 805.8653733720. The cubic root of 649419 is about 86.5980933573.

The spelling of 649419 in words is "six hundred forty-nine thousand, four hundred nineteen".