70200009 has 24 divisors (see below), whose sum is σ = 111384000. Its totient is φ = 42251040.

The previous prime is 70200001. The next prime is 70200017. The reversal of 70200009 is 90000207.

It is an interprime number because it is at equal distance from previous prime (70200001) and next prime (70200017).

It is not a de Polignac number, because 70200009 - 2³ = 70200001 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 70199964 and 70200000.

It is not an unprimeable number, because it can be changed into a prime (70200001) 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, 12372 + ... + 17130.

It is an arithmetic number, because the mean of its divisors is an integer number (4641000).

Almost surely, 2^70200009 is an apocalyptic number.

It is an amenable number.

70200009 is a deficient number, since it is larger than the sum of its proper divisors (41183991).

70200009 is a wasteful number, since it uses less digits than its factorization.

70200009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4925 (or 4922 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 70200009 is about 8378.5445633475. The cubic root of 70200009 is about 412.5206777513.

The spelling of 70200009 in words is "seventy million, two hundred thousand, nine".