705388401 has 6 divisors (see below), whose sum is σ = 1018894370. Its totient is φ = 470258928.

The previous prime is 705388367. The next prime is 705388421. The reversal of 705388401 is 104883507.

It can be written as a sum of positive squares in only one way, i.e., 672624225 + 32764176 = 25935^2 + 5724^2 .

It is not a de Polignac number, because 705388401 - 2¹⁰ = 705387377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (705388421) 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, 39188236 + ... + 39188253.

Almost surely, 2^705388401 is an apocalyptic number.

It is an amenable number.

705388401 is a deficient number, since it is larger than the sum of its proper divisors (313505969).

705388401 is a wasteful number, since it uses less digits than its factorization.

705388401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78376495 (or 78376492 counting only the distinct ones).

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

The square root of 705388401 is about 26559.1491015808. The cubic root of 705388401 is about 890.1764582996.

The spelling of 705388401 in words is "seven hundred five million, three hundred eighty-eight thousand, four hundred one".