70904005 has 4 divisors (see below), whose sum is σ = 85084812. Its totient is φ = 56723200.

The previous prime is 70903999. The next prime is 70904069. The reversal of 70904005 is 50040907.

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 43046721 + 27857284 = 6561^2 + 5278^2 .

It is not a de Polignac number, because 70904005 - 2⁹ = 70903493 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, 7090396 + ... + 7090405.

It is an arithmetic number, because the mean of its divisors is an integer number (21271203).

Almost surely, 2^70904005 is an apocalyptic number.

It is an amenable number.

70904005 is a deficient number, since it is larger than the sum of its proper divisors (14180807).

70904005 is a wasteful number, since it uses less digits than its factorization.

70904005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14180806.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 70904005 is about 8420.4515912153. The cubic root of 70904005 is about 413.8950720882.

The spelling of 70904005 in words is "seventy million, nine hundred four thousand, five".