70163858 has 6 divisors (see below), whose sum is σ = 105263559. Its totient is φ = 35076006.

The previous prime is 70163857. The next prime is 70163867. The reversal of 70163858 is 85836107.

It can be written as a sum of positive squares in only one way, i.e., 35081929 + 35081929 = 5923^2 + 5923^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5923.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70163851) 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 2 ways as a sum of consecutive naturals, for example, 8885 + ... + 14807.

Almost surely, 2^70163858 is an apocalyptic number.

70163858 is a deficient number, since it is larger than the sum of its proper divisors (35099701).

70163858 is an frugal number, since it uses more digits than its factorization.

70163858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11848 (or 5925 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 70163858 is about 8376.3869299358. The cubic root of 70163858 is about 412.4498534694.

The spelling of 70163858 in words is "seventy million, one hundred sixty-three thousand, eight hundred fifty-eight".