705742530 has 32 divisors (see below), whose sum is σ = 1703153088. Its totient is φ = 187156800.

The previous prime is 705742529. The next prime is 705742537. The reversal of 705742530 is 35247507.

It is a junction number, because it is equal to n+sod(n) for n = 705742491 and 705742500.

It is not an unprimeable number, because it can be changed into a prime (705742537) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 59556 + ... + 70415.

It is an arithmetic number, because the mean of its divisors is an integer number (53223534).

Almost surely, 2^705742530 is an apocalyptic number.

705742530 is an abundant number, since it is smaller than the sum of its proper divisors (997410558).

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

705742530 is a wasteful number, since it uses less digits than its factorization.

705742530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130162.

The product of its (nonzero) digits is 29400, while the sum is 33.

The square root of 705742530 is about 26565.8150637243. The cubic root of 705742530 is about 890.3253996771.

The spelling of 705742530 in words is "seven hundred five million, seven hundred forty-two thousand, five hundred thirty".