649190 has 8 divisors (see below), whose sum is σ = 1168560. Its totient is φ = 259672.

The previous prime is 649183. The next prime is 649217. The reversal of 649190 is 91946.

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

It is a super-2 number, since 2×649190² = 842895312200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

649190 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32450 + ... + 32469.

It is an arithmetic number, because the mean of its divisors is an integer number (146070).

2⁶⁴⁹¹⁹⁰ is an apocalyptic number.

649190 is a deficient number, since it is larger than the sum of its proper divisors (519370).

649190 is a wasteful number, since it uses less digits than its factorization.

649190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64926.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 649190 is about 805.7232775587. The cubic root of 649190 is about 86.5879133375.

The spelling of 649190 in words is "six hundred forty-nine thousand, one hundred ninety".