873661740 has 96 divisors (see below), whose sum is σ = 2810035200. Its totient is φ = 198671616.

The previous prime is 873661729. The next prime is 873661753. The reversal of 873661740 is 47166378.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 873661692 and 873661701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78354 + ... + 88806.

It is an arithmetic number, because the mean of its divisors is an integer number (29271200).

Almost surely, 2^873661740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 873661740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1405017600).

873661740 is an abundant number, since it is smaller than the sum of its proper divisors (1936373460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

873661740 is a wasteful number, since it uses less digits than its factorization.

873661740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10671 (or 10669 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 873661740 is about 29557.7695369593. The cubic root of 873661740 is about 955.9777236688.

The spelling of 873661740 in words is "eight hundred seventy-three million, six hundred sixty-one thousand, seven hundred forty".