641893463 has 16 divisors (see below), whose sum is σ = 693308160. Its totient is φ = 592099200.

The previous prime is 641893457. The next prime is 641893487. The reversal of 641893463 is 364398146.

It is a cyclic number.

It is not a de Polignac number, because 641893463 - 2¹⁰ = 641892439 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 (641893403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214568 + ... + 217538.

It is an arithmetic number, because the mean of its divisors is an integer number (43331760).

Almost surely, 2^641893463 is an apocalyptic number.

641893463 is a deficient number, since it is larger than the sum of its proper divisors (51414697).

641893463 is a wasteful number, since it uses less digits than its factorization.

641893463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3238.

The product of its digits is 373248, while the sum is 44.

The square root of 641893463 is about 25335.6164914138. The cubic root of 641893463 is about 862.6229022649.

The spelling of 641893463 in words is "six hundred forty-one million, eight hundred ninety-three thousand, four hundred sixty-three".