863263641 has 4 divisors (see below), whose sum is σ = 1151018192. Its totient is φ = 575509092.

The previous prime is 863263637. The next prime is 863263663. The reversal of 863263641 is 146362368.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 863263641 - 2² = 863263637 is a prime.

It is a super-2 number, since 2×863263641² = 1490448227745153762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 863263641.

It is not an unprimeable number, because it can be changed into a prime (863273641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143877271 + ... + 143877276.

It is an arithmetic number, because the mean of its divisors is an integer number (287754548).

Almost surely, 2^863263641 is an apocalyptic number.

It is an amenable number.

863263641 is a deficient number, since it is larger than the sum of its proper divisors (287754551).

863263641 is a wasteful number, since it uses less digits than its factorization.

863263641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287754550.

The product of its digits is 124416, while the sum is 39.

The square root of 863263641 is about 29381.3485224896. The cubic root of 863263641 is about 952.1699762551.

The spelling of 863263641 in words is "eight hundred sixty-three million, two hundred sixty-three thousand, six hundred forty-one".