70381605 has 32 divisors (see below), whose sum is σ = 135475200. Its totient is φ = 30480192.

The previous prime is 70381603. The next prime is 70381613. The reversal of 70381605 is 50618307.

It is not a de Polignac number, because 70381605 - 2¹ = 70381603 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70381603) 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 31 ways as a sum of consecutive naturals, for example, 15645 + ... + 19634.

It is an arithmetic number, because the mean of its divisors is an integer number (4233600).

Almost surely, 2^70381605 is an apocalyptic number.

It is an amenable number.

70381605 is a deficient number, since it is larger than the sum of its proper divisors (65093595).

70381605 is a wasteful number, since it uses less digits than its factorization.

70381605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35313.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 70381605 is about 8389.3745297251. The cubic root of 70381605 is about 412.8760794272.

The spelling of 70381605 in words is "seventy million, three hundred eighty-one thousand, six hundred five".