873212787 has 12 divisors (see below), whose sum is σ = 1278586504. Its totient is φ = 574166880.

The previous prime is 873212783. The next prime is 873212801. The reversal of 873212787 is 787212378.

It is a happy number.

It is not a de Polignac number, because 873212787 - 2² = 873212783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (873212783) 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, 663889 + ... + 665202.

Almost surely, 2^873212787 is an apocalyptic number.

873212787 is a deficient number, since it is larger than the sum of its proper divisors (405373717).

873212787 is a wasteful number, since it uses less digits than its factorization.

873212787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329170 (or 1329167 counting only the distinct ones).

The product of its digits is 263424, while the sum is 45.

The square root of 873212787 is about 29550.1740604011. The cubic root of 873212787 is about 955.8139445672.

The spelling of 873212787 in words is "eight hundred seventy-three million, two hundred twelve thousand, seven hundred eighty-seven".