70807172 has 6 divisors (see below), whose sum is σ = 123912558. Its totient is φ = 35403584.

The previous prime is 70807171. The next prime is 70807201. The reversal of 70807172 is 27170807.

It can be written as a sum of positive squares in only one way, i.e., 69989956 + 817216 = 8366^2 + 904^2 .

It is not an unprimeable number, because it can be changed into a prime (70807171) 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 as a sum of consecutive naturals, namely, 8850893 + ... + 8850900.

It is an arithmetic number, because the mean of its divisors is an integer number (20652093).

Almost surely, 2^70807172 is an apocalyptic number.

It is an amenable number.

70807172 is a deficient number, since it is larger than the sum of its proper divisors (53105386).

70807172 is a wasteful number, since it uses less digits than its factorization.

70807172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17701797 (or 17701795 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 32.

The square root of 70807172 is about 8414.6997569729. The cubic root of 70807172 is about 413.7065685831.

Adding to 70807172 its reverse (27170807), we get a palindrome (97977979).

The spelling of 70807172 in words is "seventy million, eight hundred seven thousand, one hundred seventy-two".