648706 has 8 divisors (see below), whose sum is σ = 1004544. Its totient is φ = 313860.

The previous prime is 648689. The next prime is 648709. The reversal of 648706 is 607846.

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

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648709) 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, 5170 + ... + 5293.

It is an arithmetic number, because the mean of its divisors is an integer number (125568).

2⁶⁴⁸⁷⁰⁶ is an apocalyptic number.

648706 is a deficient number, since it is larger than the sum of its proper divisors (355838).

648706 is a wasteful number, since it uses less digits than its factorization.

648706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10496.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 648706 is about 805.4228702986. The cubic root of 648706 is about 86.5663896083.

The spelling of 648706 in words is "six hundred forty-eight thousand, seven hundred six".