70340405 has 4 divisors (see below), whose sum is σ = 84408492. Its totient is φ = 56272320.

The previous prime is 70340393. The next prime is 70340447. The reversal of 70340405 is 50404307.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46594276 + 23746129 = 6826^2 + 4873^2 .

It is not a de Polignac number, because 70340405 - 2²⁶ = 3231541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7034036 + ... + 7034045.

It is an arithmetic number, because the mean of its divisors is an integer number (21102123).

Almost surely, 2^70340405 is an apocalyptic number.

It is an amenable number.

70340405 is a deficient number, since it is larger than the sum of its proper divisors (14068087).

70340405 is a wasteful number, since it uses less digits than its factorization.

70340405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14068086.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 70340405 is about 8386.9186832829. The cubic root of 70340405 is about 412.7955005375.

The spelling of 70340405 in words is "seventy million, three hundred forty thousand, four hundred five".