873813656 has 16 divisors (see below), whose sum is σ = 1639378440. Its totient is φ = 436646080.

The previous prime is 873813653. The next prime is 873813673. The reversal of 873813656 is 656318378.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 873813656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (873813653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17966 + ... + 45501.

Almost surely, 2^873813656 is an apocalyptic number.

It is an amenable number.

873813656 is a deficient number, since it is larger than the sum of its proper divisors (765564784).

873813656 is a wasteful number, since it uses less digits than its factorization.

873813656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65194 (or 65190 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The square root of 873813656 is about 29560.3392402726. The cubic root of 873813656 is about 956.0331302746.

The spelling of 873813656 in words is "eight hundred seventy-three million, eight hundred thirteen thousand, six hundred fifty-six".