870353640 has 128 divisors (see below), whose sum is σ = 3124396800. Its totient is φ = 214237440.

The previous prime is 870353629. The next prime is 870353647. The reversal of 870353640 is 46353078.

It is a happy number.

870353640 is a `hidden beast` number, since 8 + 7 + 0 + 3 + 5 + 3 + 640 = 666.

It is a super-2 number, since 2×870353640² = 1515030917322499200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 870353595 and 870353604.

It is not an unprimeable number, because it can be changed into a prime (870353647) 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, 16956 + ... + 45035.

It is an arithmetic number, because the mean of its divisors is an integer number (24409350).

Almost surely, 2^870353640 is an apocalyptic number.

It is an amenable number.

870353640 is an abundant number, since it is smaller than the sum of its proper divisors (2254043160).

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

870353640 is a wasteful number, since it uses less digits than its factorization.

870353640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62024 (or 62014 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 870353640 is about 29501.7565578730. The cubic root of 870353640 is about 954.7696016843.

The spelling of 870353640 in words is "eight hundred seventy million, three hundred fifty-three thousand, six hundred forty".