649874 has 8 divisors (see below), whose sum is σ = 979020. Its totient is φ = 323536.

The previous prime is 649871. The next prime is 649877. The reversal of 649874 is 478946.

It is a happy number.

649874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (649871) and next prime (649877).

It can be written as a sum of positive squares in 2 ways, for example, as 648025 + 1849 = 805^2 + 43^2 .

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

It is not an unprimeable number, because it can be changed into a prime (649871) 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, 32 + ... + 1140.

2⁶⁴⁹⁸⁷⁴ is an apocalyptic number.

649874 is a deficient number, since it is larger than the sum of its proper divisors (329146).

649874 is a wasteful number, since it uses less digits than its factorization.

649874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404.

The product of its digits is 48384, while the sum is 38.

The square root of 649874 is about 806.1476291598. The cubic root of 649874 is about 86.6183129351.

The spelling of 649874 in words is "six hundred forty-nine thousand, eight hundred seventy-four".