641461 has 8 divisors (see below), whose sum is σ = 687960. Its totient is φ = 595968.

The previous prime is 641453. The next prime is 641467. The reversal of 641461 is 164146.

It can be written as a sum of positive squares in 4 ways, for example, as 86436 + 555025 = 294^2 + 745^2 .

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

It is not a de Polignac number, because 641461 - 2³ = 641453 is a prime.

It is a super-2 number, since 2×641461² = 822944429042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641467) 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 7 ways as a sum of consecutive naturals, for example, 1455 + ... + 1843.

It is an arithmetic number, because the mean of its divisors is an integer number (85995).

2⁶⁴¹⁴⁶¹ is an apocalyptic number.

It is an amenable number.

641461 is a deficient number, since it is larger than the sum of its proper divisors (46499).

641461 is a wasteful number, since it uses less digits than its factorization.

641461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503.

The product of its digits is 576, while the sum is 22.

The square root of 641461 is about 800.9126044707. The cubic root of 641461 is about 86.2429133714.

The spelling of 641461 in words is "six hundred forty-one thousand, four hundred sixty-one".