70209113 has 4 divisors (see below), whose sum is σ = 75609828. Its totient is φ = 64808400.

The previous prime is 70209107. The next prime is 70209127. The reversal of 70209113 is 31190207.

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 7038409 + 63170704 = 2653^2 + 7948^2 .

It is a cyclic number.

It is not a de Polignac number, because 70209113 - 2⁶ = 70209049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70209103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2700338 + ... + 2700363.

It is an arithmetic number, because the mean of its divisors is an integer number (18902457).

Almost surely, 2^70209113 is an apocalyptic number.

It is an amenable number.

70209113 is a deficient number, since it is larger than the sum of its proper divisors (5400715).

70209113 is a wasteful number, since it uses less digits than its factorization.

70209113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5400714.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 70209113 is about 8379.0878381838. The cubic root of 70209113 is about 412.5385097809.

The spelling of 70209113 in words is "seventy million, two hundred nine thousand, one hundred thirteen".