656498 has 4 divisors (see below), whose sum is σ = 984750. Its totient is φ = 328248.

The previous prime is 656483. The next prime is 656519. The reversal of 656498 is 894656.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 413449 + 243049 = 643^2 + 493^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164123 + ... + 164126.

2⁶⁵⁶⁴⁹⁸ is an apocalyptic number.

656498 is a deficient number, since it is larger than the sum of its proper divisors (328252).

656498 is a wasteful number, since it uses less digits than its factorization.

656498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328251.

The product of its digits is 51840, while the sum is 38.

The square root of 656498 is about 810.2456417655. The cubic root of 656498 is about 86.9116114687.

The spelling of 656498 in words is "six hundred fifty-six thousand, four hundred ninety-eight".