649174 has 4 divisors (see below), whose sum is σ = 973764. Its totient is φ = 324586.

The previous prime is 649157. The next prime is 649183. The reversal of 649174 is 471946.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a zygodrome in base 9.

It is a congruent number.

It is an unprimeable 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 as a sum of consecutive naturals, namely, 162292 + ... + 162295.

It is an arithmetic number, because the mean of its divisors is an integer number (243441).

2⁶⁴⁹¹⁷⁴ is an apocalyptic number.

649174 is a deficient number, since it is larger than the sum of its proper divisors (324590).

649174 is a wasteful number, since it uses less digits than its factorization.

649174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324589.

The product of its digits is 6048, while the sum is 31.

The square root of 649174 is about 805.7133485304. The cubic root of 649174 is about 86.5872019803.

The spelling of 649174 in words is "six hundred forty-nine thousand, one hundred seventy-four".