641494 has 8 divisors (see below), whose sum is σ = 1099728. Its totient is φ = 274920.

The previous prime is 641491. The next prime is 641513. The reversal of 641494 is 494146.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641491) 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, 22897 + ... + 22924.

It is an arithmetic number, because the mean of its divisors is an integer number (137466).

2⁶⁴¹⁴⁹⁴ is an apocalyptic number.

641494 is a deficient number, since it is larger than the sum of its proper divisors (458234).

641494 is a wasteful number, since it uses less digits than its factorization.

641494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45830.

The product of its digits is 3456, while the sum is 28.

The square root of 641494 is about 800.9332057044. The cubic root of 641494 is about 86.2443922700.

The spelling of 641494 in words is "six hundred forty-one thousand, four hundred ninety-four".