70713220 has 24 divisors (see below), whose sum is σ = 148655808. Its totient is φ = 28255200.

The previous prime is 70713191. The next prime is 70713221. The reversal of 70713220 is 2231707.

It is a junction number, because it is equal to n+sod(n) for n = 70713191 and 70713200.

It is not an unprimeable number, because it can be changed into a prime (70713221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35655 + ... + 37585.

It is an arithmetic number, because the mean of its divisors is an integer number (6193992).

Almost surely, 2^70713220 is an apocalyptic number.

It is an amenable number.

70713220 is an abundant number, since it is smaller than the sum of its proper divisors (77942588).

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

70713220 is a wasteful number, since it uses less digits than its factorization.

70713220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3771 (or 3769 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 70713220 is about 8409.1152923479. The cubic root of 70713220 is about 413.5235091447.

Adding to 70713220 its reverse (2231707), we get a palindrome (72944927).

The spelling of 70713220 in words is "seventy million, seven hundred thirteen thousand, two hundred twenty".