705841380 has 72 divisors (see below), whose sum is σ = 2170422072. Its totient is φ = 185642496.

The previous prime is 705841369. The next prime is 705841391. The reversal of 705841380 is 83148507.

705841380 is a `hidden beast` number, since 70 + 584 + 1 + 3 + 8 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (705841369) and next prime (705841391).

It can be written as a sum of positive squares in 4 ways, for example, as 84934656 + 620906724 = 9216^2 + 24918^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13719 + ... + 39998.

It is an arithmetic number, because the mean of its divisors is an integer number (30144751).

Almost surely, 2^705841380 is an apocalyptic number.

It is an amenable number.

705841380 is an abundant number, since it is smaller than the sum of its proper divisors (1464580692).

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

705841380 is a wasteful number, since it uses less digits than its factorization.

705841380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53805 (or 53800 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 705841380 is about 26567.6754722727. The cubic root of 705841380 is about 890.3669656181.

Adding to 705841380 its reverse (83148507), we get a palindrome (788989887).

The spelling of 705841380 in words is "seven hundred five million, eight hundred forty-one thousand, three hundred eighty".