641454 has 16 divisors (see below), whose sum is σ = 1399680. Its totient is φ = 194360.

The previous prime is 641453. The next prime is 641467. The reversal of 641454 is 454146.

It is a super-2 number, since 2×641454² = 822926468232, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 641454.

It is not an unprimeable number, because it can be changed into a prime (641453) 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, 4794 + ... + 4925.

It is an arithmetic number, because the mean of its divisors is an integer number (87480).

2⁶⁴¹⁴⁵⁴ is an apocalyptic number.

641454 is an abundant number, since it is smaller than the sum of its proper divisors (758226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641454 is a wasteful number, since it uses less digits than its factorization.

641454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9735.

The product of its digits is 1920, while the sum is 24.

The square root of 641454 is about 800.9082344439. The cubic root of 641454 is about 86.2425996591.

The spelling of 641454 in words is "six hundred forty-one thousand, four hundred fifty-four".