705972390 has 16 divisors (see below), whose sum is σ = 1694333808. Its totient is φ = 188259296.

The previous prime is 705972329. The next prime is 705972391. The reversal of 705972390 is 93279507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705972391) 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 7 ways as a sum of consecutive naturals, for example, 11766177 + ... + 11766236.

It is an arithmetic number, because the mean of its divisors is an integer number (105895863).

Almost surely, 2^705972390 is an apocalyptic number.

705972390 is an abundant number, since it is smaller than the sum of its proper divisors (988361418).

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

705972390 is a wasteful number, since it uses less digits than its factorization.

705972390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23532423.

The product of its (nonzero) digits is 119070, while the sum is 42.

The square root of 705972390 is about 26570.1409480642. The cubic root of 705972390 is about 890.4220487021.

The spelling of 705972390 in words is "seven hundred five million, nine hundred seventy-two thousand, three hundred ninety".