863541005 has 4 divisors (see below), whose sum is σ = 1036249212. Its totient is φ = 690832800.

The previous prime is 863540989. The next prime is 863541023. The reversal of 863541005 is 500145368.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 107785924 + 755755081 = 10382^2 + 27491^2 .

It is not a de Polignac number, because 863541005 - 2⁴ = 863540989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86354096 + ... + 86354105.

It is an arithmetic number, because the mean of its divisors is an integer number (259062303).

Almost surely, 2^863541005 is an apocalyptic number.

It is an amenable number.

863541005 is a deficient number, since it is larger than the sum of its proper divisors (172708207).

863541005 is a wasteful number, since it uses less digits than its factorization.

863541005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172708206.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 863541005 is about 29386.0682126752. The cubic root of 863541005 is about 952.2719417811.

The spelling of 863541005 in words is "eight hundred sixty-three million, five hundred forty-one thousand, five".