863212663 has 4 divisors (see below), whose sum is σ = 875037568. Its totient is φ = 851387760.

The previous prime is 863212619. The next prime is 863212667. The reversal of 863212663 is 366212368.

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 863212663 - 2⁹ = 863212151 is a prime.

It is a super-2 number, since 2×863212663² = 1490272203127103138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863212667) 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, 5912343 + ... + 5912488.

It is an arithmetic number, because the mean of its divisors is an integer number (218759392).

Almost surely, 2^863212663 is an apocalyptic number.

863212663 is a deficient number, since it is larger than the sum of its proper divisors (11824905).

863212663 is a wasteful number, since it uses less digits than its factorization.

863212663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11824904.

The product of its digits is 62208, while the sum is 37.

The square root of 863212663 is about 29380.4809865325. The cubic root of 863212663 is about 952.1512331681.

The spelling of 863212663 in words is "eight hundred sixty-three million, two hundred twelve thousand, six hundred sixty-three".