70205387 has 12 divisors (see below), whose sum is σ = 81922680. Its totient is φ = 59988096.

The previous prime is 70205383. The next prime is 70205417. The reversal of 70205387 is 78350207.

It is not a de Polignac number, because 70205387 - 2² = 70205383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70205381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14939 + ... + 19067.

It is an arithmetic number, because the mean of its divisors is an integer number (6826890).

Almost surely, 2^70205387 is an apocalyptic number.

70205387 is a deficient number, since it is larger than the sum of its proper divisors (11717293).

70205387 is a wasteful number, since it uses less digits than its factorization.

70205387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4490 (or 4483 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 70205387 is about 8378.8654959965. The cubic root of 70205387 is about 412.5312118409.

The spelling of 70205387 in words is "seventy million, two hundred five thousand, three hundred eighty-seven".