648698 has 16 divisors (see below), whose sum is σ = 1050720. Its totient is φ = 299376.

The previous prime is 648689. The next prime is 648709. The reversal of 648698 is 896846.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 648698.

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 in 7 ways as a sum of consecutive naturals, for example, 1436 + ... + 1832.

It is an arithmetic number, because the mean of its divisors is an integer number (65670).

2⁶⁴⁸⁶⁹⁸ is an apocalyptic number.

648698 is a deficient number, since it is larger than the sum of its proper divisors (402022).

648698 is a wasteful number, since it uses less digits than its factorization.

648698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461.

The product of its digits is 82944, while the sum is 41.

The square root of 648698 is about 805.4179039480. The cubic root of 648698 is about 86.5660337543.

It can be divided in two parts, 6486 and 98, that multiplied together give a triangular number (635628 = T₁₁₂₇).

The spelling of 648698 in words is "six hundred forty-eight thousand, six hundred ninety-eight".