648734 has 8 divisors (see below), whose sum is σ = 977448. Its totient is φ = 322920.

The previous prime is 648731. The next prime is 648763. The reversal of 648734 is 437846.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 648734.

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 648734.

It is not an unprimeable number, because it can be changed into a prime (648731) 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 3 ways as a sum of consecutive naturals, for example, 32 + ... + 1139.

It is an arithmetic number, because the mean of its divisors is an integer number (122181).

2⁶⁴⁸⁷³⁴ is an apocalyptic number.

648734 is a deficient number, since it is larger than the sum of its proper divisors (328714).

648734 is a wasteful number, since it uses less digits than its factorization.

648734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450.

The product of its digits is 16128, while the sum is 32.

The square root of 648734 is about 805.4402522844. The cubic root of 648734 is about 86.5676350744.

The spelling of 648734 in words is "six hundred forty-eight thousand, seven hundred thirty-four".