870225644 has 48 divisors (see below), whose sum is σ = 1591071552. Its totient is φ = 416120832.

The previous prime is 870225641. The next prime is 870225659. The reversal of 870225644 is 446522078.

It is a junction number, because it is equal to n+sod(n) for n = 870225598 and 870225607.

It is not an unprimeable number, because it can be changed into a prime (870225641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3385964 + ... + 3386220.

It is an arithmetic number, because the mean of its divisors is an integer number (33147324).

Almost surely, 2^870225644 is an apocalyptic number.

It is an amenable number.

870225644 is a deficient number, since it is larger than the sum of its proper divisors (720845908).

870225644 is a wasteful number, since it uses less digits than its factorization.

870225644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 38.

The square root of 870225644 is about 29499.5871835522. The cubic root of 870225644 is about 954.7227959280.

The spelling of 870225644 in words is "eight hundred seventy million, two hundred twenty-five thousand, six hundred forty-four".