70036209 has 24 divisors (see below), whose sum is σ = 107431272. Its totient is φ = 43814400.

The previous prime is 70036201. The next prime is 70036229. The reversal of 70036209 is 90263007.

It can be written as a sum of positive squares in 4 ways, for example, as 22467600 + 47568609 = 4740^2 + 6897^2 .

It is not a de Polignac number, because 70036209 - 2³ = 70036201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70036201) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 99559 + ... + 100259.

It is an arithmetic number, because the mean of its divisors is an integer number (4476303).

Almost surely, 2^70036209 is an apocalyptic number.

It is an amenable number.

70036209 is a deficient number, since it is larger than the sum of its proper divisors (37395063).

70036209 is a wasteful number, since it uses less digits than its factorization.

70036209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377 (or 1374 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 70036209 is about 8368.7638872178. The cubic root of 70036209 is about 412.1995785030.

The spelling of 70036209 in words is "seventy million, thirty-six thousand, two hundred nine".