70163391 has 8 divisors (see below), whose sum is σ = 93596544. Its totient is φ = 46752920.

The previous prime is 70163381. The next prime is 70163393. The reversal of 70163391 is 19336107.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70163391 - 2⁷ = 70163263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70163393) 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 7 ways as a sum of consecutive naturals, for example, 3820 + ... + 12446.

It is an arithmetic number, because the mean of its divisors is an integer number (11699568).

Almost surely, 2^70163391 is an apocalyptic number.

70163391 is a deficient number, since it is larger than the sum of its proper divisors (23433153).

70163391 is a wasteful number, since it uses less digits than its factorization.

70163391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11341.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 70163391 is about 8376.3590539088. The cubic root of 70163391 is about 412.4489383995.

Adding to 70163391 its reverse (19336107), we get a palindrome (89499498).

The spelling of 70163391 in words is "seventy million, one hundred sixty-three thousand, three hundred ninety-one".