870686445 has 16 divisors (see below), whose sum is σ = 1398525120. Its totient is φ = 462557184.

The previous prime is 870686437. The next prime is 870686447. The reversal of 870686445 is 544686078.

It is not a de Polignac number, because 870686445 - 2³ = 870686437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 870686394 and 870686403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870686447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109075 + ... + 116784.

It is an arithmetic number, because the mean of its divisors is an integer number (87407820).

Almost surely, 2^870686445 is an apocalyptic number.

It is an amenable number.

870686445 is a deficient number, since it is larger than the sum of its proper divisors (527838675).

870686445 is a wasteful number, since it uses less digits than its factorization.

870686445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226124.

The product of its (nonzero) digits is 1290240, while the sum is 48.

The square root of 870686445 is about 29507.3964456372. The cubic root of 870686445 is about 954.8912808082.

The spelling of 870686445 in words is "eight hundred seventy million, six hundred eighty-six thousand, four hundred forty-five".