641773 has 8 divisors (see below), whose sum is σ = 717696. Its totient is φ = 568800.

The previous prime is 641761. The next prime is 641789. The reversal of 641773 is 377146.

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

It is a cyclic number.

It is not a de Polignac number, because 641773 - 2⁹ = 641261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261 + ... + 1162.

It is an arithmetic number, because the mean of its divisors is an integer number (89712).

2⁶⁴¹⁷⁷³ is an apocalyptic number.

It is an amenable number.

641773 is a deficient number, since it is larger than the sum of its proper divisors (75923).

641773 is a wasteful number, since it uses less digits than its factorization.

641773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475.

The product of its digits is 3528, while the sum is 28.

The square root of 641773 is about 801.1073585981. The cubic root of 641773 is about 86.2568936589.

The spelling of 641773 in words is "six hundred forty-one thousand, seven hundred seventy-three".