70211620 has 12 divisors (see below), whose sum is σ = 147444444. Its totient is φ = 28084640.

The previous prime is 70211611. The next prime is 70211627. The reversal of 70211620 is 2611207.

It can be written as a sum of positive squares in 2 ways, for example, as 26440164 + 43771456 = 5142^2 + 6616^2 .

It is not an unprimeable number, because it can be changed into a prime (70211627) 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 in 3 ways as a sum of consecutive naturals, for example, 1755271 + ... + 1755310.

It is an arithmetic number, because the mean of its divisors is an integer number (12287037).

Almost surely, 2^70211620 is an apocalyptic number.

It is an amenable number.

70211620 is an abundant number, since it is smaller than the sum of its proper divisors (77232824).

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

70211620 is a wasteful number, since it uses less digits than its factorization.

70211620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3510590 (or 3510588 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 70211620 is about 8379.2374354711. The cubic root of 70211620 is about 412.5434199779.

Adding to 70211620 its reverse (2611207), we get a palindrome (72822827).

The spelling of 70211620 in words is "seventy million, two hundred eleven thousand, six hundred twenty".