70850020 has 24 divisors (see below), whose sum is σ = 148990968. Its totient is φ = 28300800.

The previous prime is 70850011. The next prime is 70850023. The reversal of 70850020 is 2005807.

It can be written as a sum of positive squares in 4 ways, for example, as 1094116 + 69755904 = 1046^2 + 8352^2 .

It is a junction number, because it is equal to n+sod(n) for n = 70849973 and 70850000.

It is not an unprimeable number, because it can be changed into a prime (70850023) 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, 15610 + ... + 19630.

It is an arithmetic number, because the mean of its divisors is an integer number (6207957).

Almost surely, 2^70850020 is an apocalyptic number.

It is an amenable number.

70850020 is an abundant number, since it is smaller than the sum of its proper divisors (78140948).

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

70850020 is a wasteful number, since it uses less digits than its factorization.

70850020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4911 (or 4909 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 70850020 is about 8417.2453926448. The cubic root of 70850020 is about 413.7900013960.

Adding to 70850020 its reverse (2005807), we get a palindrome (72855827).

The spelling of 70850020 in words is "seventy million, eight hundred fifty thousand, twenty".