870090705 has 48 divisors (see below), whose sum is σ = 1689764544. Its totient is φ = 410451840.

The previous prime is 870090691. The next prime is 870090707. The reversal of 870090705 is 507090078.

It is not a de Polignac number, because 870090705 - 2⁸ = 870090449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 870090705.

It is not an unprimeable number, because it can be changed into a prime (870090707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5439 + ... + 42068.

It is an arithmetic number, because the mean of its divisors is an integer number (35203428).

Almost surely, 2^870090705 is an apocalyptic number.

It is an amenable number.

870090705 is a deficient number, since it is larger than the sum of its proper divisors (819673839).

870090705 is a wasteful number, since it uses less digits than its factorization.

870090705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47566 (or 47563 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 870090705 is about 29497.2999611829. The cubic root of 870090705 is about 954.6734462757.

The spelling of 870090705 in words is "eight hundred seventy million, ninety thousand, seven hundred five".