649734 has 8 divisors (see below), whose sum is σ = 1299480. Its totient is φ = 216576.

The previous prime is 649717. The next prime is 649739. The reversal of 649734 is 437946.

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

649734 is an admirable number.

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 junction number, because it is equal to n+sod(n) for n = 649695 and 649704.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 649734.

It is not an unprimeable number, because it can be changed into a prime (649739) 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, 54139 + ... + 54150.

It is an arithmetic number, because the mean of its divisors is an integer number (162435).

2⁶⁴⁹⁷³⁴ is an apocalyptic number.

649734 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.

649734 is a wasteful number, since it uses less digits than its factorization.

649734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108294.

The product of its digits is 18144, while the sum is 33.

The square root of 649734 is about 806.0607917521. The cubic root of 649734 is about 86.6120925320.

The spelling of 649734 in words is "six hundred forty-nine thousand, seven hundred thirty-four".