705840084 has 18 divisors (see below), whose sum is σ = 1784206970. Its totient is φ = 235280016.

The previous prime is 705840071. The next prime is 705840103. The reversal of 705840084 is 480048507.

705840084 is a `hidden beast` number, since 70 + 584 + 0 + 0 + 8 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 530012484 + 175827600 = 23022^2 + 13260^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×705840084² = 996420448362254112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 19606669 = 705840084 / (7 + 0 + 5 + 8 + 4 + 0 + 0 + 8 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9803299 + ... + 9803370.

Almost surely, 2^705840084 is an apocalyptic number.

It is an amenable number.

705840084 is an abundant number, since it is smaller than the sum of its proper divisors (1078366886).

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

705840084 is a wasteful number, since it uses less digits than its factorization.

705840084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19606679 (or 19606674 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 705840084 is about 26567.6510817197. The cubic root of 705840084 is about 890.3664206816.

The spelling of 705840084 in words is "seven hundred five million, eight hundred forty thousand, eighty-four".