641246 has 8 divisors (see below), whose sum is σ = 965304. Its totient is φ = 319480.

The previous prime is 641239. The next prime is 641261. The reversal of 641246 is 642146.

It is a happy number.

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

It is a super-2 number, since 2×641246² = 822392865032, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

641246 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 656 + ... + 1308.

It is an arithmetic number, because the mean of its divisors is an integer number (120663).

2⁶⁴¹²⁴⁶ is an apocalyptic number.

641246 is a deficient number, since it is larger than the sum of its proper divisors (324058).

641246 is a wasteful number, since it uses less digits than its factorization.

641246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146.

The product of its digits is 1152, while the sum is 23.

The square root of 641246 is about 800.7783713363. The cubic root of 641246 is about 86.2332768810.

Subtracting 641246 from its reverse (642146), we obtain a square (900 = 30²).

The spelling of 641246 in words is "six hundred forty-one thousand, two hundred forty-six".