70019906 has 16 divisors (see below), whose sum is σ = 121318560. Its totient is φ = 29954880.

The previous prime is 70019897. The next prime is 70019909. The reversal of 70019906 is 60991007.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70019909) 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 7 ways as a sum of consecutive naturals, for example, 93236 + ... + 93983.

It is an arithmetic number, because the mean of its divisors is an integer number (7582410).

Almost surely, 2^70019906 is an apocalyptic number.

70019906 is a deficient number, since it is larger than the sum of its proper divisors (51298654).

70019906 is a wasteful number, since it uses less digits than its factorization.

70019906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187249.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 70019906 is about 8367.7897918148. The cubic root of 70019906 is about 412.1675921380.

The spelling of 70019906 in words is "seventy million, nineteen thousand, nine hundred six".