641463 has 4 divisors (see below), whose sum is σ = 855288. Its totient is φ = 427640.

The previous prime is 641453. The next prime is 641467. The reversal of 641463 is 364146.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 641463 - 2¹³ = 633271 is a prime.

It is a super-2 number, since 2×641463² = 822949560738, which contains 22 as substring.

It is a D-number.

It is a plaindrome in base 8 and base 14.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106908 + ... + 106913.

It is an arithmetic number, because the mean of its divisors is an integer number (213822).

2⁶⁴¹⁴⁶³ is an apocalyptic number.

641463 is a deficient number, since it is larger than the sum of its proper divisors (213825).

641463 is a wasteful number, since it uses less digits than its factorization.

641463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213824.

The product of its digits is 1728, while the sum is 24.

The square root of 641463 is about 800.9138530454. The cubic root of 641463 is about 86.2430030031.

The spelling of 641463 in words is "six hundred forty-one thousand, four hundred sixty-three".