858797663 has 12 divisors (see below), whose sum is σ = 910487160. Its totient is φ = 807777936.

The previous prime is 858797629. The next prime is 858797671. The reversal of 858797663 is 366797858.

It is not a de Polignac number, because 858797663 - 2¹² = 858793567 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 (858797683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1792658 + ... + 1793136.

It is an arithmetic number, because the mean of its divisors is an integer number (75873930).

Almost surely, 2^858797663 is an apocalyptic number.

858797663 is a deficient number, since it is larger than the sum of its proper divisors (51689497).

858797663 is an equidigital number, since it uses as much as digits as its factorization.

858797663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174 (or 695 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 59.

The square root of 858797663 is about 29305.2497515377. The cubic root of 858797663 is about 950.5251622671.

The spelling of 858797663 in words is "eight hundred fifty-eight million, seven hundred ninety-seven thousand, six hundred sixty-three".