70139870 has 16 divisors (see below), whose sum is σ = 126532800. Its totient is φ = 27993504.

The previous prime is 70139869. The next prime is 70139873. The reversal of 70139870 is 7893107.

It is a self number, because there is not a number n which added to its sum of digits gives 70139870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70139873) 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, 2945 + ... + 12204.

It is an arithmetic number, because the mean of its divisors is an integer number (7908300).

Almost surely, 2^70139870 is an apocalyptic number.

70139870 is a deficient number, since it is larger than the sum of its proper divisors (56392930).

70139870 is a wasteful number, since it uses less digits than its factorization.

70139870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15619.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 70139870 is about 8374.9549252518. The cubic root of 70139870 is about 412.4028445815.

The spelling of 70139870 in words is "seventy million, one hundred thirty-nine thousand, eight hundred seventy".