705620061 has 6 divisors (see below), whose sum is σ = 1019228990. Its totient is φ = 470413368.

The previous prime is 705620057. The next prime is 705620063. The reversal of 705620061 is 160026507.

705620061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 460102500 + 245517561 = 21450^2 + 15669^2 .

It is not a de Polignac number, because 705620061 - 2² = 705620057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705620063) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39201106 + ... + 39201123.

Almost surely, 2^705620061 is an apocalyptic number.

It is an amenable number.

705620061 is a deficient number, since it is larger than the sum of its proper divisors (313608929).

705620061 is a wasteful number, since it uses less digits than its factorization.

705620061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78402235 (or 78402232 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 705620061 is about 26563.5099525646. The cubic root of 705620061 is about 890.2738966787.

Adding to 705620061 its reverse (160026507), we get a palindrome (865646568).

The spelling of 705620061 in words is "seven hundred five million, six hundred twenty thousand, sixty-one".