70009870 has 32 divisors (see below), whose sum is σ = 151603200. Its totient is φ = 22739616.

The previous prime is 70009853. The next prime is 70009871. The reversal of 70009870 is 7890007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70009871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24990 + ... + 27649.

It is an arithmetic number, because the mean of its divisors is an integer number (4737600).

Almost surely, 2^70009870 is an apocalyptic number.

70009870 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

70009870 is an abundant number, since it is smaller than the sum of its proper divisors (81593330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70009870 is a wasteful number, since it uses less digits than its factorization.

70009870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52672.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 70009870 is about 8367.1900898689. The cubic root of 70009870 is about 412.1478991114.

Adding to 70009870 its reverse (7890007), we get a palindrome (77899877).

The spelling of 70009870 in words is "seventy million, nine thousand, eight hundred seventy".