870623380 has 96 divisors (see below), whose sum is σ = 2129162112. Its totient is φ = 295526400.

The previous prime is 870623359. The next prime is 870623381. The reversal of 870623380 is 83326078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870623381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 489052 + ... + 490828.

It is an arithmetic number, because the mean of its divisors is an integer number (22178772).

Almost surely, 2^870623380 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 870623380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1064581056).

870623380 is an abundant number, since it is smaller than the sum of its proper divisors (1258538732).

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

870623380 is a wasteful number, since it uses less digits than its factorization.

870623380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945 (or 1943 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 870623380 is about 29506.3277959152. The cubic root of 870623380 is about 954.8682255614.

The spelling of 870623380 in words is "eight hundred seventy million, six hundred twenty-three thousand, three hundred eighty".