70209797 has 12 divisors (see below), whose sum is σ = 82042380. Its totient is φ = 59907456.

The previous prime is 70209781. The next prime is 70209809. The reversal of 70209797 is 79790207.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 67881121 + 2328676 = 8239^2 + 1526^2 .

It is not a de Polignac number, because 70209797 - 2⁴ = 70209781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70205797) 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 11 ways as a sum of consecutive naturals, for example, 8093 + ... + 14349.

It is an arithmetic number, because the mean of its divisors is an integer number (6836865).

Almost surely, 2^70209797 is an apocalyptic number.

It is an amenable number.

70209797 is a deficient number, since it is larger than the sum of its proper divisors (11832583).

70209797 is a wasteful number, since it uses less digits than its factorization.

70209797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6500 (or 6493 counting only the distinct ones).

The product of its (nonzero) digits is 55566, while the sum is 41.

The square root of 70209797 is about 8379.1286539831. The cubic root of 70209797 is about 412.5398494713.

The spelling of 70209797 in words is "seventy million, two hundred nine thousand, seven hundred ninety-seven".