641444463 has 24 divisors (see below), whose sum is σ = 1027340496. Its totient is φ = 382377600.

The previous prime is 641444443. The next prime is 641444477. The reversal of 641444463 is 364444146.

641444463 is a `hidden beast` number, since 641 + 4 + 4 + 4 + 4 + 6 + 3 = 666.

It is not a de Polignac number, because 641444463 - 2¹⁷ = 641313391 is a prime.

It is a super-2 number, since 2×641444463² = 822901998226716738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641444423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47070 + ... + 59147.

It is an arithmetic number, because the mean of its divisors is an integer number (42805854).

Almost surely, 2^641444463 is an apocalyptic number.

641444463 is a deficient number, since it is larger than the sum of its proper divisors (385896033).

641444463 is a wasteful number, since it uses less digits than its factorization.

641444463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106295 (or 106292 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

The square root of 641444463 is about 25326.7538978054. The cubic root of 641444463 is about 862.4217224486.

The spelling of 641444463 in words is "six hundred forty-one million, four hundred forty-four thousand, four hundred sixty-three".