873661625 has 8 divisors (see below), whose sum is σ = 1090329864. Its totient is φ = 698929200.

The previous prime is 873661619. The next prime is 873661631. The reversal of 873661625 is 526166378.

It is an interprime number because it is at equal distance from previous prime (873661619) and next prime (873661631).

It can be written as a sum of positive squares in 4 ways, for example, as 21196816 + 852464809 = 4604^2 + 29197^2 .

It is not a de Polignac number, because 873661625 - 2⁴ = 873661609 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3494522 + ... + 3494771.

It is an arithmetic number, because the mean of its divisors is an integer number (136291233).

Almost surely, 2^873661625 is an apocalyptic number.

It is an amenable number.

873661625 is a deficient number, since it is larger than the sum of its proper divisors (216668239).

873661625 is an equidigital number, since it uses as much as digits as its factorization.

873661625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6989308 (or 6989298 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 873661625 is about 29557.7675916163. The cubic root of 873661625 is about 955.9776817237.

The spelling of 873661625 in words is "eight hundred seventy-three million, six hundred sixty-one thousand, six hundred twenty-five".